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Tutors Answer Your Questions about percentage (FREE)
Question 171055: What is a percent of change problem that equals out to 25% ?: What is a percent of change problem that equals out to 25% ?
Answer by stanbon(19066)  (Show Source):
You can put this solution on YOUR website!What is a percent of change problem that equals out to 25% ?
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Butter was selling at $1.00 per pound and is now selling for $1.25 per pound.
What is the % of increase.
Answer: 25%
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Cheers,
Stan H.
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Question 170948: What is 85% of $125? How do i figure this problem out. : What is 85% of $125? How do i figure this problem out.
Answer by Mathtut(634) (Show Source): |
Question 170641: My instuctions ask me to express each percent as a fraction or mixed number in simplest form, and as a decimal.
Please show me step by step how to solve 8 and 5 over 6% and also help me solve twenty-five and one over 3%: My instuctions ask me to express each percent as a fraction or mixed number in simplest form, and as a decimal.
Please show me step by step how to solve 8 and 5 over 6% and also help me solve twenty-five and one over 3%
Answer by checkley77(3674) (Show Source):
You can put this solution on YOUR website!I'M NOT EXACTLY SURE WHAT YOU WANT BUT i'LL TRY.
IF YOU MEAN 8/.06=133.333
IF YOU MEAN 5/.06=83.333
25/.03=833.333
1/.03=33.333:
OR DO YOU MEAN THE 'AND' TO BE A PLUS SIGN?
(8+5).06=13/.06=216.667
(25+1).03=26/.03=866.667
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Question 170628This question is from textbook Holt Mathematics Course 2: Pre-Algebra
: (they are reading a chapter of a book)
Carly read: 1/3 of chapter
Jo read: 0.25 of chapter
Sam read: ? of chapter
(How much did Sam read?)This question is from textbook Holt Mathematics Course 2: Pre-Algebra
: (they are reading a chapter of a book)
Carly read: 1/3 of chapter
Jo read: 0.25 of chapter
Sam read: ? of chapter
(How much did Sam read?)
Answer by Mathtut(634) (Show Source):
You can put this solution on YOUR website!well if I am hearing the question correctly a full chapter was read by carly, Jo, and Sam. If Carly read 1/3 and Jo read .25 or 1/4 . Let s be the portion of the chapter sam read.
(1/3)+(1/4)+s=1.....multiply by Least common multiple which is 12
:
4+3+12s=12........now subtract 4 and 3 from both sides
:
 portion of chapter that Sam read
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Question 170488: The number of bacteria N in a culture is given by the model
N=250e^kt
Where t is the time (in hours). If N=280 when T=10, estimate the time required for the population to double in size. Verify your estimate graphically.
: The number of bacteria N in a culture is given by the model
N=250e^kt
Where t is the time (in hours). If N=280 when T=10, estimate the time required for the population to double in size. Verify your estimate graphically.
Answer by scott8148(2779) (Show Source):
You can put this solution on YOUR website!first, solve for k
280=250e^(10k) __ dividing by 250 __ 1.12=e^(10k)
taking natural log __ ln(1.12)=10k __ dividing by 10 __ (ln(1.12))/10=k
solve for doubling time __ 2=e^[(ln(1.12)/10)t]
taking natural log __ ln(2)=(ln(1.12)/10)t
dividing by (ln(1.12)/10) __ 10[(ln(2))/(ln(1.12)]=t __ 61.2=t (approx)
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Question 170174: In 1992 the cost of stamps went up $.15 to $.18. What is the percent increase?: In 1992 the cost of stamps went up $.15 to $.18. What is the percent increase?
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!In 1992 the cost of stamps went up $.15 to $.18. What is the percent increase?
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Quantity Increase: 0.18 - 0.15 = 3 cents
Percent increase: 3/15 = 1/5 = 20%
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Cheers,
Stan H.
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Question 170013: if A is 50% larger than C ,and B is 25% larger than C ,then A is what percent larger than B ?: if A is 50% larger than C ,and B is 25% larger than C ,then A is what percent larger than B ?
Answer by checkley77(3674) (Show Source): |
Question 169962: Write each percent as a decimal number. 11.6%: Write each percent as a decimal number. 11.6%
Answer by solver91311(1887) (Show Source): |
Question 169471: what is x to 4x in percent of change.?: what is x to 4x in percent of change.?
Answer by Alan3354(1464) (Show Source):
You can put this solution on YOUR website!what is x to 4x in percent of change.?
0 solutions
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It's a 300% increase. The original value, x, + 300%, which is 3x, adds to 4x.
It's not a 400% increase, or 4 times more as the people on TV say, it's a 300% increase, or it's 4 times as much.
I've had disagreements with some NASA guys that get that wrong. Wrong is wrong, no matter who you work for.
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Question 168556: The vote count for candidate A was 7,310. The vote count for candidate B was 14,190. What percent of the voters voted for candidate A?: The vote count for candidate A was 7,310. The vote count for candidate B was 14,190. What percent of the voters voted for candidate A?
Answer by gonzo(480) (Show Source): |
Question 168556: The vote count for candidate A was 7,310. The vote count for candidate B was 14,190. What percent of the voters voted for candidate A?: The vote count for candidate A was 7,310. The vote count for candidate B was 14,190. What percent of the voters voted for candidate A?
Answer by MRperkins(77) (Show Source):
You can put this solution on YOUR website!find the total number of voters. Then take (vote count for candidate A)/(total votes). This will give you the fraction and multiply this by 100 to get your percentage.
.
I hope this helps!
.
Private tutoring is available. Click on my name to go to my website or email me at justin.sheppard.tech@hotmail.com for more information. If you have any other questions you can direct them to me personally and I will answer them for you.
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Question 168490: Please help me solve this SAT practice question:
There are 75 more women than men enrolled in Linden College. If there are n men enrolled, then, interms of n, what percent of those enrolled are men?
I started by saying Let n= # of men, which means that # of women= n+75
Then I wrote 100(n+75)= the percentage of women
So in order to find the percentage of men in terms of n I wrote 100- 100(n+75)
I just can't seem to get the solution that is a part of the choices given, which were:
A.) [n/(n+75)]%
B.) [n/(2n+75)]%
C.) [n/((100(2n+75))]%
D.) [100n/(n+75)]%
E.) [100n/(2n+75)]%: Please help me solve this SAT practice question:
There are 75 more women than men enrolled in Linden College. If there are n men enrolled, then, interms of n, what percent of those enrolled are men?
I started by saying Let n= # of men, which means that # of women= n+75
Then I wrote 100(n+75)= the percentage of women
So in order to find the percentage of men in terms of n I wrote 100- 100(n+75)
I just can't seem to get the solution that is a part of the choices given, which were:
A.) [n/(n+75)]%
B.) [n/(2n+75)]%
C.) [n/((100(2n+75))]%
D.) [100n/(n+75)]%
E.) [100n/(2n+75)]%
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!There are 75 more women than men enrolled in Linden College. If there are n men enrolled, then, interms of n, what percent of those enrolled are men?
I started by saying Let n= # of men, which means that # of women= n+75
--------
To get the percentage form n/[n+n+75] = n/[2n+75]%
================
Cheers,
Stan H.
A.) [n/(n+75)]%
B.) [n/(2n+75)]%
C.) [n/((100(2n+75))]%
D.) [100n/(n+75)]%
E.) [100n/(2n+75)]%
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Question 168382: the patel manufacturing company allows for a defect rate of 0.9% on it's production line. The defect average for last week was 3 items out of 1,500. What is the difference between the allowed defect rate and the defect average for last week? : the patel manufacturing company allows for a defect rate of 0.9% on it's production line. The defect average for last week was 3 items out of 1,500. What is the difference between the allowed defect rate and the defect average for last week?
Answer by checkley77(3674) (Show Source): |
Question 168105: My question is about percentages:
test 1 = 25% have 76%
test 2 = 25% have 77%
test 3 = 30%
I need a 75% avg from my tests in order for me to add on the other 20%. I can figure out my avg from test 1 and 2 but what is the formula to predict the lowest grade I can get from 3rd test considering it is worth 30% and not 25%?
quizzes = 5% have 100%
essay = 5% = have 100%
project = 10% ?? not finished
Can't figure out how much I need to get a 90% in class.
Thanks,
jessiejames: My question is about percentages:
test 1 = 25% have 76%
test 2 = 25% have 77%
test 3 = 30%
I need a 75% avg from my tests in order for me to add on the other 20%. I can figure out my avg from test 1 and 2 but what is the formula to predict the lowest grade I can get from 3rd test considering it is worth 30% and not 25%?
quizzes = 5% have 100%
essay = 5% = have 100%
project = 10% ?? not finished
Can't figure out how much I need to get a 90% in class.
Thanks,
jessiejames
Answer by nerdybill(1130) (Show Source):
You can put this solution on YOUR website!test 1 = 25% have 76%
test 2 = 25% have 77%
test 3 = 30% have x%
.
.25(76) + .25(77) + .30(x) >= 75
19 + 19.25 + .30(x) >= 75
38.25 + .30(x) >= 75
.30(x) >= 36.75
x >= 36.75/.30
x >= 122.5
.
This says you need to score 122.5% on test 3.
Which is impossible unless you can score "extra credit".
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Question 167408: A scratcher has four even numbers and four odd numbers covered. What are the odds that you would scratch off three even numbers on your first try?: A scratcher has four even numbers and four odd numbers covered. What are the odds that you would scratch off three even numbers on your first try?
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!A scratcher has four even numbers and four odd numbers covered. What are the odds that you would scratch off three even numbers on your first try?
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P(3 even with no replacement) = (4/8)(3/7)(2/6) = 0.0714...
P(not 3 even) = 0.92857..
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Odds in favor of 3 even = P(3 even)/P(not 3 even) = 0.07689...
===========================
Cheers,
Stan H.
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Question 167145This question is from textbook algebra 1
: The percent of increase is 16%. If the new number is 522, find the original number.This question is from textbook algebra 1
: The percent of increase is 16%. If the new number is 522, find the original number.
Answer by jojo14344(900) (Show Source): |
Question 167109: How would I solve these problems? 16 2/3% of42: How would I solve these problems? 16 2/3% of42
Answer by checkley77(3674) (Show Source): |
Question 166703: Tickets for a concert were sold to adults for $3 and to students for $2. If the total receipts were $824
and twice as many adult tickets as student tickets were sold, then how many of each were sold?
How is this sort of problem set up? and the necessary steps to solve?
Thanks,
Zach Cottrell: Tickets for a concert were sold to adults for $3 and to students for $2. If the total receipts were $824
and twice as many adult tickets as student tickets were sold, then how many of each were sold?
How is this sort of problem set up? and the necessary steps to solve?
Thanks,
Zach Cottrell
Answer by scott8148(2779) (Show Source):
You can put this solution on YOUR website!cost times number equals receipts
"total receipts were $824" __ 3a+2s=824
"twice as many adult tickets as student tickets were sold" __ a=2s
substituting __ 3a+(a)=824 __ 4a=824 __ a=206
substituting __ 206=2s __ 103=s
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Question 166304: I need Your Help in drawing a pie chart ?
please help and tell me how to make a pie chart.
I Shall be very thankful to you because i am taking a exam of maths tomorrow.
: I need Your Help in drawing a pie chart ?
please help and tell me how to make a pie chart.
I Shall be very thankful to you because i am taking a exam of maths tomorrow.
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!I need Your Help in drawing a pie chart ?
please help and tell me how to make a pie chart.
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Let's say you have:
A: 12 items
B: 17 items
C: 25 items
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1st: Add the items to get 54
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2nd: Convert each item count to percentage:
12/54 = 22%
17/54 = 31%
25/54 = 46%
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3rd: Draw a circle and estimate the percentages as pieces of pie
that fill the circle.
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Cheers,
Stan H.
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Question 166095: Bacteria X has a relative growth rate of 220 % (under ideal conditions). Some bacteria X are accidentally introduced into some egg salad. Three hours after contamination, there were 45,000 bacteria X in the egg salad.
Find the initial number of bacteria X introduced into the egg salad: : Bacteria X has a relative growth rate of 220 % (under ideal conditions). Some bacteria X are accidentally introduced into some egg salad. Three hours after contamination, there were 45,000 bacteria X in the egg salad.
Find the initial number of bacteria X introduced into the egg salad:
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!Bacteria X has a relative growth rate of 220 % (under ideal conditions). Some bacteria X are accidentally introduced into some egg salad. Three hours after contamination, there were 45,000 bacteria X in the egg salad.
Find the initial number of bacteria X introduced into the egg salad:
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Question: Do you mean 220% per hour?
A(t) = Ao(2.2)^t, where t is the number of hours.
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45000 = Ao(2.2)^3
Ao = 45000/2.2^3
Ao = 4226. 14
Rounding down:
Ao = 4226
====================
Cheers,
Stan H.
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Question 165999: What percent of 150 is 30?
: What percent of 150 is 30?
Answer by MRperkins(77) (Show Source):
You can put this solution on YOUR website!"is" generally identifies an equals sign.
"of" generally identifies multiplication
so: (what percent x 150 = 30)
or: (n*150=30)
divide each side by 150 and you get n=30/150 or n=1/5 or n=.2
to convert to % you multiply by 100 and you get  %.
.
private tutoring available
.
contact justin.sheppard.tech@hotmail.com for more information
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Question 165628: the pie chart i have to submit has total salary's. how do i calculate the percentage for each piece of the pie. $3,306.88
$3,516.11
$2,021.83
$3,229.92
$2,021.83: the pie chart i have to submit has total salary's. how do i calculate the percentage for each piece of the pie. $3,306.88
$3,516.11
$2,021.83
$3,229.92
$2,021.83
Answer by josmiceli(2035) (Show Source):
You can put this solution on YOUR website!A whole circle is made up of 360 degrees
Find total of the saleries = 
![T = s[1] + s[2] + s[3]](/cgi-bin/plot-formula.mpl?expression=T+=+s%5B1%5D+%2B+s%5B2%5D+%2B+s%5B3%5D&x=0003)
The slices of the pie will be:
![(s[1]/T)*360](/cgi-bin/plot-formula.mpl?expression=%28s%5B1%5D%2FT%29%2A360&x=0003) degrees
![(s[2]/T)*360](/cgi-bin/plot-formula.mpl?expression=%28s%5B2%5D%2FT%29%2A360&x=0003) degrees
![(s[3]/T)*360](/cgi-bin/plot-formula.mpl?expression=%28s%5B3%5D%2FT%29%2A360&x=0003) degrees
The sum of these 3 slices should add up to 360 degrees,
if not, recalculate
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Question 165404: I am not sure if I picked the right catagory but I am having a hard time with on algebra word problem.
If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 - meter dash t years after 1925, for what years will the world records be 47.6 seconds or less?
If you could help me with this I would SO appreciate it!
Jen: I am not sure if I picked the right catagory but I am having a hard time with on algebra word problem.
If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 - meter dash t years after 1925, for what years will the world records be 47.6 seconds or less?
If you could help me with this I would SO appreciate it!
Jen
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 - meter dash t years after 1925, for what years will the world records be 47.6 seconds or less?
----------------------------------------
EQUATION:
47.6 >= -0.037t + 50.1
-0.037t <= 47.6-50.1
-0.037t <= -2.5
t >= 67.567
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Year?
year >= 1925+67.567 >= 1993
=====================
Cheers,
Stan H.
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Question 165404: I am not sure if I picked the right catagory but I am having a hard time with on algebra word problem.
If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 - meter dash t years after 1925, for what years will the world records be 47.6 seconds or less?
If you could help me with this I would SO appreciate it!
Jen: I am not sure if I picked the right catagory but I am having a hard time with on algebra word problem.
If the formula R = -0.037t + 50.1 can be used to predict the world record in the 400 - meter dash t years after 1925, for what years will the world records be 47.6 seconds or less?
If you could help me with this I would SO appreciate it!
Jen
Answer by nerdybill(1130) (Show Source):
You can put this solution on YOUR website!You are given:
R = -0.037t + 50.1
where
R is the record
t is years after 1925
.
So, they want to know when the record will be 47.6 seconds or less...
So, just "plug it in" and solve for 't':
R = -0.037t + 50.1
47.6 = -0.037t + 50.1
47.6 + 0.037t = 50.1
0.037t = 2.5
t = 2.5/0.037
t = 67.568 years after 1925
.
So,
1925 + 67.568 = 1992.568
.
Conclusion:
1992 and AFTER the world record will be 47.6 seconds or less
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Question 165399: I have a word problem I do not know how to write the equation for or solve. The problem reads: A salesperson has two job offers. Company A offers a weekly salary of $630 plus commision of 14% of sales. Company B offers a weekly salary of $1260 plus a commision of 7% of sales. What is the amount of sales above which Company A's offer is the betterof the two?: I have a word problem I do not know how to write the equation for or solve. The problem reads: A salesperson has two job offers. Company A offers a weekly salary of $630 plus commision of 14% of sales. Company B offers a weekly salary of $1260 plus a commision of 7% of sales. What is the amount of sales above which Company A's offer is the betterof the two?
Answer by josmiceli(2035) (Show Source):
You can put this solution on YOUR website!Another way to state the problem is "What level of
sales makes the two offers equal?"
Let  = the number of sales
After 9000 sales, offer A becomes the better deal
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Question 165399: I have a word problem I do not know how to write the equation for or solve. The problem reads: A salesperson has two job offers. Company A offers a weekly salary of $630 plus commision of 14% of sales. Company B offers a weekly salary of $1260 plus a commision of 7% of sales. What is the amount of sales above which Company A's offer is the betterof the two?: I have a word problem I do not know how to write the equation for or solve. The problem reads: A salesperson has two job offers. Company A offers a weekly salary of $630 plus commision of 14% of sales. Company B offers a weekly salary of $1260 plus a commision of 7% of sales. What is the amount of sales above which Company A's offer is the betterof the two?
Answer by Mathtut(634) (Show Source):
You can put this solution on YOUR website!A= 630+.14S B=1260+.07S so if you want A to be greater than write the equation as an inequality like this 630+.14>1260+.07S and solve for S subtract .07S and 630 from both sides and you end up with .07S>630 so S>9000... so anything above $9000 dollars in sales and company A's offer will be better.
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Question 164610This question is from textbook 
: how to do this sum by algebric or any other methods:
1. Increase 80pounds by 4%This question is from textbook
: how to do this sum by algebric or any other methods:
1. Increase 80pounds by 4%
Answer by MRperkins(77) (Show Source):
You can put this solution on YOUR website!you must convert 4% to a decimal by dividing by 100 or moving the decimal two places to the left. Therefore 4% becomes .04
Next multiply 80 pounds by .04 and you get 3.2 pounds
3.2 pounds is the amount of weight being increased so you need to add it to the original 80 pounds
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Question 164610This question is from textbook
: how to do this sum by algebric or any other methods:
1. Increase 80pounds by 4%This question is from textbook
: how to do this sum by algebric or any other methods:
1. Increase 80pounds by 4%
Answer by stanbon(19066) (Show Source): |
Question 164057: The product of Janelle's height and 8 is 112 .
Use the variable j to represent Janelle's height.: The product of Janelle's height and 8 is 112 .
Use the variable j to represent Janelle's height.
Answer by Alan3354(1464) (Show Source):
You can put this solution on YOUR website!The product of Janelle's height and 8 is 112 .
Use the variable j to represent Janelle's height.
---------------------
j times 8 = 112
8j = 112
Divide thru by 8
j = 112/8
j = 14
(Janelle is short, unless that's 14 feet.)
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Question 164056: Solve the following equation for m.
mn=11: Solve the following equation for m.
mn=11
Answer by Alan3354(1464) (Show Source):
You can put this solution on YOUR website!Solve the following equation for m.
mn=11
-------------
"Solving for" means getting the variable on one side of the equal sign by itself.
mn = 11
Divide thru by n
m = 11/n
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Question 164055: A 63 meter pipe is cut into two pieces. If one piece has a length of x meters, what is the length, in meters, of the other piece? Write an algebraic expression to answer the question: A 63 meter pipe is cut into two pieces. If one piece has a length of x meters, what is the length, in meters, of the other piece? Write an algebraic expression to answer the question
Answer by Alan3354(1464) (Show Source):
You can put this solution on YOUR website!A 63 meter pipe is cut into two pieces. If one piece has a length of x meters, what is the length, in meters, of the other piece? Write an algebraic expression to answer the question
---------------------
The other piece is (63 - x) meters.
L2 = 63-x
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Question 164050: If $52,200 is used for 36% of house hold's expenses, what is the annual household income?: If $52,200 is used for 36% of house hold's expenses, what is the annual household income?
Answer by stanbon(19066) (Show Source):
You can put this solution on YOUR website!If $52,200 is used for 36% of house hold's expenses, what is the annual household income?
---------
Let total household income be "x".
EQUATION:
52200 = 0.36x
x =52200/0.36
x = $145,000
Cheers,
Stan H.
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Question 163605: The directins read: Use a proportion to answer the question.
Question 1.: What percent of 125 is 25?
I did this: 25/125 = x/125 = 125x/125 = 2500/125
x= 20: The directins read: Use a proportion to answer the question.
Question 1.: What percent of 125 is 25?
I did this: 25/125 = x/125 = 125x/125 = 2500/125
x= 20
Answer by checkley77(3674) (Show Source): |
Question 163333: sally puts $200.00 in a bank account. Each year the account earns 8% simple interest. How much iterest will be earned in three years? : sally puts $200.00 in a bank account. Each year the account earns 8% simple interest. How much iterest will be earned in three years?
Answer by elima(1423) (Show Source): |
Question 163172This question is from textbook 
: If x is 225% of y, then y is what percent of x?This question is from textbook
: If x is 225% of y, then y is what percent of x?
Answer by checkley77(3674) (Show Source): |
Question 163111: How do you find the original price of an iten if the sale price is given and
the percentage of the sale price is given?
12590 is the 12% of the orginal price. What is the orignal price?: How do you find the original price of an iten if the sale price is given and
the percentage of the sale price is given?
12590 is the 12% of the orginal price. What is the orignal price?
Answer by Fombitz(1756) (Show Source): |
Question 163035: soy bean meal is 12% protein cornmeal is 6% protein How many pounds of each should be mixed together in order to get 240 pound mixture that is 7% protein?
How many pounds of the cornmeal should be in the mixture?
How many pounds of soybean meal should be in the mixture?: soy bean meal is 12% protein cornmeal is 6% protein How many pounds of each should be mixed together in order to get 240 pound mixture that is 7% protein?
How many pounds of the cornmeal should be in the mixture?
How many pounds of soybean meal should be in the mixture?
Answer by orca(336) (Show Source):
You can put this solution on YOUR website!Let x be the amount of cornmeal to be mixed.
Then the amount of soy bean meal to be mixed is 240 - x.
The amount of protein in the cornmeal is x*6%.
The amount of protein in the soy bean meal is (240 - x)*12%.
The amount of protein in the 240 pounds mixture is 240*7%.
As the amount of protein in the cornmeal + the amount of protein in the soy bean meal = amount of protein in the 240 pounds mixture, we have:
x*6% + (240 - x)*12% = 240*7%
Solving the equation for x, we have
6x + 12(240 - x) = 7*240 (multiplying both sides by 100)
6x + 2880 - 12x = 1680
-6x = -1200
x = 200
So 200 pounds of the cornmeal should be in the mixture.
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Question 162213: wholesale price:$19
percent markup:110%: wholesale price:$19
percent markup:110%
Answer by jojo14344(900) (Show Source): |
Question 161575: A sum of $2000 is split between two investments, one paying 7% interest and the other 8%. If the return on the 8% investment exceeds that of the 7% investment by $40 per year, how much is invested at each rate.: A sum of $2000 is split between two investments, one paying 7% interest and the other 8%. If the return on the 8% investment exceeds that of the 7% investment by $40 per year, how much is invested at each rate.
Answer by josmiceli(2035) (Show Source): |
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