Questions on Algebra: Proportions answered by real tutors!

Tutors Answer Your Questions about Proportions (FREE)

Question 721967: 10 over 25 equals y over 20

Click here to see answer by Alan3354(69443)

Question 723184: what ratios are equivalent to 9/2

Click here to see answer by solver91311(24713)

Question 724180: what is x+11/10 = 6/5?

Click here to see answer by Alan3354(69443)

Question 725823: If two Towns are 3 inches apart on the map and in real dimensions they are 15 miles apart what is the scale of the map
Click here to see answer by General_Lee87(58)

Question 726617: A pole that is 18 ft tall, the ground, and the shadow cast by the pole form a right triangle. If a stick which is exactly 1 yard long is placed perpendicular to the ground casts a shadow of 2.5 ft, how long is the shadow of the pole?
Please show steps. Thank you.
Click here to see answer by tanjo3(60)

Question 727424:

168 is to 300 as what is to what? how do i figure this out?

Click here to see answer by checkley79(3341)

Question 727782: A group of 3 children are sharing 2 burritos so that each person gets the same amount. How many burritos should a group of 6 children get so that each child gets as much burritos as a child in the first group?
Click here to see answer by josgarithmetic(39617)

Question 729108: There are 900 students in a school, the ratio of girls to boys is 5:4 how many boys and girls go to that school
Click here to see answer by Alan3354(69443)

Question 729581: how to solve 1/3 : 2/3 : 1/6 ?

Click here to see answer by Simnepi(216)

Question 731792: SUPPOSE Y IS DIRECTLY PROPORTIONAL TO X AND THAT Y =-68 WHEN X =8
Click here to see answer by Alan3354(69443)

Question 732059:
An investor invested a total of $2300 in two mutual funds. One fund earned a 6% profit, and the other a 2% profit. If the total profit was $98, how much was invested in each mutual fund.
Click here to see answer by checkley79(3341)

Question 732071: At West Middle School, 30% of students have a dog, 20% of students have a cat, 10% of students have another kind of pet, and 40% of students have no pets.
a) Explain how you can use a random-number table to find the experimental probability that in a group of 5 students, at least 2 will have a dog.
b) Use your model from part a and the table below to find the experimental probability that in a group of 5 students, at least 2 will have a dog

65926 31459 31986 65809 80462 27387 39075 46738 21986 59837 91384 10987 26491 68498 98796 32596 26448 31235 63256 53121
These numbers are on chart couldnt post it

Click here to see answer by lynnlo(4176)

Question 732245: Hi, please help me with this problem
Use the formula d=rt to find the value of the missing variable
r=4 mph
t=7 hours
d= how many miles?
Thank you
Click here to see answer by MathLover1(20849)

Question 732674: The ratio to adults to children is 5:3, there are 144 people. How many adults are there?
Click here to see answer by solver91311(24713)

Question 732946: sir if one man do a work in 30 days and 2nd do it in 40 days and 3rd do it in 45 days if they work together tell me in how much days they do work
Click here to see answer by lynnlo(4176)

Question 733717: Solve the proportion: 4/10 = 8/a
Click here to see answer by lynnlo(4176)

Question 734167: 2 6
_______ = _______
x-1 2x+1
Click here to see answer by lynnlo(4176)

Question 735606: I have an unlimited number of bags containing marbles.
Each bag contains only two colors - black and one other color.
Some have 45% aquamarine marbles.
Some have 45% blue marbles
Some have 60% cyan marbles
If I take one bag of each color and mix all three bags together in a larger bag (in a ratio of 1:1:1) then the resultant bag would contain the following of each color represented as a percentage:
15% aquamarine marbles
15% blue marbles
20% cyan marbles
(based on the relationship that the final bag contains the 300 marbles so the percentages of each is calculated as total color marble/300).
If I enter a ratio of 2:1:2 then my final percentages are:-
18% aqua marbles
9% blue marbles
24% cyan marbles
What ratio of my original bags would I need to combine together to have a new bag containing a final percentage of the color marbles equaling:-
10% aquamarine marbles
5% blue marbles
20% cyan marbles
(I can use part of an original bag but must use the original percentage of black and color marbles e.g. I could use half of a blue bag which would yield 27.5 black marbles and 22.5 blue marbles)
Click here to see answer by lynnlo(4176)

Question 735665: 2/7Y+3/8 =1/7Y+5/3
Click here to see answer by checkley79(3341)

Question 735681: JOSE RUNS 20 FEET IN 3 SECONDS HOW LONG DOES IT TAKE HIM TO RUN 100 FEET
Click here to see answer by solver91311(24713)

Question 735855: James Caleb and Abigail bought a pizza. James ate 1//6 of the pizza and Caleb ate 1/4 of the pizza.
What fraction of the pizza did james and Caleb eat together? I got 5/12
Abigail ate 2/5 of the pizza that was remaining. What fraction of the original whole pizza did Abigail eat?
Click here to see answer by stanbon(75887)

Question 736067: 190% of what number is 95?
Click here to see answer by solver91311(24713)

Question 736387: Hi,
Here is the problem I need help with-
The diameter of a dinner plate is 1 ft. In a dollhouse set, the
diameter of a dinner plate is 1 and 1/4 in.What is the ratio of the diameter of the
dollhouse plate to the diameter of the full-size plate?
Please help me out
This is what I have so far-
1ft= 12 in
I think I have to write as followed
1.25/12 in
but I don't know what to do?
Help please
Thank you
Click here to see answer by Simnepi(216)

Question 736539: I am having difficulty with this problem:
A gift of $6000 grew into $6,000,000 in 200 years. What is the interest rate if it is compounded annually?
Click here to see answer by stanbon(75887)

Question 736578: if the actual distance between two cities is 157.5 miles and the distance on the map is 1 and 3/4 inches, what is the scale of the map?
Click here to see answer by rfer(16322)

Question 736619: A simple random sample of 250 Americans revealed that 112 of them owned a DVD player.
DVD companies, as an industry, brag that half of all Americans own a DVD player
At the 10% level, the DVD industry's claim should be
Rejected or not Rejected ?
Click here to see answer by lynnlo(4176)

Question 737098: How do I set these up?
It takes 13 people to pick 112 watermelons in a day. How many people would it take to pick 200 watermelons in a day?
Set up a proportion for the following situation.It takes Todd 8 minutes to eat 5 pies at a pie eating contest. How many pies can Todd eat in 15 minutes?

Click here to see answer by josgarithmetic(39617)

Question 737320: A kilometer is about 5/8 mile. About how many miles are in 4 2/5? What is the proportion and what is the correct answer?
Click here to see answer by sachi(548)

Question 739971: I have tried to solve the following GMAT math problem for hours!
After spending 5/12 of his salary, a man has 140.00 dollars left. What is his salary?
The choices given were : 200.00. 240.00. 300.00. 420.00 583.00
The answer is. 240.00 I just do not understand how they got their answer.
The answer is based on the following: the man did not spend 7/12 of his salary. Ok, I got that understanding. However, they say that 140.00 represents 7/12 of his salary(I have no idea why they say this?) Set up a proportion where S is equal to his salary:
7/12 is equal to 140 divided by S. The answer is 240.00.
I tried to figure out the value of 1/12 . Forget that.
Then I set up the following proportion: If 5/12 is equal to 140, then 7/12 is equal to what value.
The answer I got was 336.00. That was not one of the choices.
I am completely stumped. Kindly help me with this supposedly easy proportion problem.
Sincerely, Ellen Motoi
Click here to see answer by josgarithmetic(39617)

Question 740500: Set up a proportion for the following situation.It takes Todd 8 minutes to eat 5 pies at a pie eating contest. How many pies can Todd eat in 15 minutes?
Click here to see answer by stanbon(75887)

Question 740792: I am rated at work either 4, 2, or 3 in 4 categories. Each category holds a weigh:
One is 40%; two are 25%; and one is 10%
In the 40% category I was rated 3 out of 4
In both 25% categories I was rated 3 out of 4
In the 10% category I was rated 2 out of 4
What should my total rating be? Can you please show me the calculation?
Thanks!
Click here to see answer by lynnlo(4176)

Question 741256: I have made 60 cupcakes. 36 are chocolate and 24 are vanilla. How many more chocolate do I need to make to have 70% of the cupcakes be chocolate. Please show the proportion used.

Click here to see answer by stanbon(75887)

Question 741331: Please help me solve this.
If the total cost of x apples is b cents, what is a general formula for the cost, in cents, of y apples?
Click here to see answer by richwmiller(17219)

Question 741331: Please help me solve this.
If the total cost of x apples is b cents, what is a general formula for the cost, in cents, of y apples?
Click here to see answer by MathLover1(20849)

Question 742432: What is the missing number in the proportion 4 : n = 3 : 9
Click here to see answer by jim_thompson5910(35256)

Question 743081: sin:cos::1:3 find sin and cos
Click here to see answer by josgarithmetic(39617)

Question 743133: Three numbers are in the ratio 2:3:4. What are the numbers if their sum is 72?

Click here to see answer by checkley79(3341)

Question 743536: w varies jointly as x and y and inversely as z. one set of values is w=112 x=4, y=8 and z= 0.2. Find w when x=8, y=10 and z=4
Click here to see answer by Edwin McCravy(20055)

Question 744103: What Is n/5=27/45 what does n equal
Click here to see answer by rfer(16322)

Question 744316: on a map, 1 inch equals 25 miles. If two cities are 7 inches apart on the map, how far are they actually apart?
Click here to see answer by Cromlix(4381)

Question 744378: how to i solve
5/8 x = -40
Click here to see answer by rfer(16322)

Question 744773: You have 100 random selected students . What is the probability half of the group has blue eyes ? What's the probability at least 25 percent of the group has blue eyes ?draw probability distribution for this exercise .
Click here to see answer by stanbon(75887)

Question 745066: The sears Tower is 1450 feet tall. Jeff wanted to make a scale model for his class project, but his mother's car can hold only a 36 in tall model. What scale does Jeff need?
Click here to see answer by Alan3354(69443)

Question 745067: Please help me solve this problem:
The smallest mammal, Kitti's hog-nosed bat has a head-body length of 1 7/50inches and a wingspan of about 5 1/10 inches. A scale drawing of this little bat is made showing it in full flight. The wingspan on the drawing is 15 inches. What should the length of the bat be in the drawing?
L= 1 7/50
15= 5 1/10
15 x 1.14 = 17.10 / 5.10 = 3.35 or 3 1/3
is this correct
Click here to see answer by stanbon(75887)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265