Questions on Algebra: Percentage and Pie Charts answered by real tutors!

Tutors Answer Your Questions about percentage (FREE)

Question 454863: In tryouts for a school play, 30% of the participants were eliminated the first week. Of those remaining, 20% were chosen. If 7 were chosen, how many tried out?
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Question 456056: Jack loaned Bob $1,500 at an annual interest rate of 7%. After one year, how much will Bob owe Jack?

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Question 456368: How much percent can be in a pie chart?
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Question 456702: how do you find the percent decrease of a problem?

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Question 456915: What did I score on my test if I got 111 questions right out of 144?
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Question 456899: frances johnson received a 6.2% increase in earnings. She was earning $86,900 annually. what is her new annual earnings?
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Question 457039:
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Question 457205: Interest question, please help
$5400 is invested, part of it at 10% and part of it at 7%. For a certain year the total yield is $468. How much was invested at each rate? Thanks for your help.
Click here to see answer by stanbon(57282)

Question 457313: My weekly paycheck is 15% less than my coworker's. The two paychecks total:$645 Find the amount of each paycheck. Answer: co-worker $348.65 my ck $296.35 Need the steps, I keep coming up with the wrong answer, frustrated. Thank you
Click here to see answer by josmiceli(9664)

Question 457322: Amy paid $84.58 for a pair of shoes during a 25% off sale. What was the original price?
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Question 457365: A student took a test composed of 20 questions, with correct answers worth 2 points. If the student received 38 points for his grade, how many questions were correct?
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Question 457392: A student took a test composed of 20 questions, with correct answers worth 2 points. If the student received 38 points for his grade, how many questions were correct?
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Question 457393: A number is four times another number. When the numbers are added, their sum is 40. What are the numbers?
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Question 457402: (3³ - 21) ÷ 2
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Question 457401: 5 x 11 - 3²
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Question 458919: What # is 30 more than 30% of 30% of 30% of 30?
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Question 459456: y=.0825
3000=x+y
X=?
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Question 459462: In one study 94.5% or 821, of the people who do not exercise regularly said that they do not feel their best. How many total people were in the study? (round your answer to the nearest whole number.
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Question 460262: How do you work out percentage from a pie chart?
Click here to see answer by Edwin McCravy(8893)

Question 460574: Thirty-seven percent of a number is 28. Find the number to the nearest tenth
A. 97.1

B. 103.6

C. 75.7

D. 132.1

Click here to see answer by JimboP1977(308)

Question 460697: Chun paid a sale price of $31.85 for a bedspread that was marked down "35% off original price" and $63.70 for a quilt. What would she have paid for the bedspread if it hadn't been on sale?

Click here to see answer by rfer(12654)

Question 460999: The profit for a company in february was 7% lower than it was in january. The total profit for the two months was $127,000. Find the profit for each month.
Click here to see answer by stanbon(57282)

Question 461222: a tv cost $312. with 35% off what is the original price?
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Question 461312: Find the percent notation for 9/8
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Question 462148: In 2004 Colin had a salary of $7200.
(a) This was an increase of 20% on his salary in 2002.
Calculate his salary in 2002
Click here to see answer by rwm(914)

Question 463225: Hello... eve wants a dress but she only have $30 to spend she live in a state where the sales tax is 5 percent .about estimate how much can the dress cost if she wants to spend all her money?
Click here to see answer by MathLover1(6625)

Question 463465: If I purchased gold at $1200.00 and the current price is $1540.00, what is the percentage increase?

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Question 463500: If i Have 5 test each worth 100% and so far I have taken 4 out of the 5. The first test score was 65%, the second test score was 57%, the third and the fourth were 80%. What would I need to get on the 5th(last) test to have a C or B in the class?
Click here to see answer by htmentor(789)

Question 463594: On a math test, Clarence answered 92% correctly. If he answered 103 questions correctly, how many questions were on the test?
Click here to see answer by checkley79(3050)

Question 464353: Stat. class. How do you consruct a pie chart when only percentages are given? I don't have frequencies to compute degrees. Components of Earth's crust:
O2 45.6%
Silicon 27.3
Alum. 8.4
Fe 6.2
Ca 4.7
Other 7.8
I have a TI-83 plus but I don't know if it'll help, or how to use it yet.

Click here to see answer by Edwin McCravy(8893)

Question 465050: Please help, this word problem looks as if it should be easy, but I don't know how to come up with the solution. Can you please explain.
A percentage bar graph is sometimes used like a circle graph. If the bar is 8 cm, how long is each piece?
10% 30% 12% 27% x%
Click here to see answer by jorel1380(2518)

Question 465415: if 29% of the group voted to change its bylaws and 31% voted against trhe change,how many people did not vote?the group has 1,930 members.
Click here to see answer by solver91311(16872)

Question 466059: The question is 2% of a number is 10. The number is 20. Do you agree, if not why and translate the problem to an equation with one variable. I got 500 * .02= 10 and 20 * .02 =.40. Help!
Click here to see answer by ptaylor(2048)

Question 466218: This year, 75% of the graduating class had taken at least 8 math courses. Of the remaining class members, 60% had taken no classes. What % take math classes?
Click here to see answer by Ryan O'Hara(46)

Question 466504: Chris has two large dogs that want to go out all the time. He has a big fenced in yard so he decided to buy a "doggie door". He did research online and found a pet supply company that was cheapest. He ordered the door online and was given a 20% discount plus a shipping and handling charge of $4.95. If Chris paid a grand total for the door of $43.99, what was the original price of the door?
Can you please help me figure this problem out. I am having a hard time figuring this problem out. Thank you.
Click here to see answer by Theo(3458)

Question 466068: if 10%or the group voted to change its bylaws and 10% voted against the change, how many people did not vote?, the group has 200 members.
Click here to see answer by gwendolyn(128)

Question 467306: i need help with math. a company lost 1/7 of its employees. if 132 of its employees were left, how many employees were there originally
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Question 467381: If 45 percent of W equals 15 percent of T, what percent of T is W?
A) 12%
B) 33 1/3%
C) 60%
D) 120%
E) 133 1/3%
Thank you!
Click here to see answer by jim_thompson5910(28536)

Question 467380: In a certain class, if Laura's average rose from 84 to 96, by what percent did her average increase?
A) 12%
B) 12 1/2%
C) 14 2/7%
D) 16 2/3 %
E) 85 5/&%
Thank you!
Click here to see answer by josmiceli(9664)

Question 467519: generally, 72% of the students in Math class pass the course. If there are 150 students in the class, how many can be expected to pass?

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Question 467559: I'm having some difficulties solving mixture word problems, more in the area of creating a table. Any advice would be greatly appreciated.
Here the problem!
Suppose that a chemist is mixing two acid solutions, one of 20% concentration and the other 30% concentration. Which one of the following concentrations could not be obtained?
A. 22% B. 24% C. 28% D. 32%
I tried to setup a table as the one listed below
{Acid Amount} {Concentration Amount} {Total of A&C Amount}
20& of solution| x .2 .2(x)
30% of solution| x .3 .3(x)
Mixture |
I'm lost because it does not advise the total amount of concentration that is needed, therefore I do not know what to enter for mixutre. My equation will end up looking like this.
.2x + .3(X) = ?

Once again, thanks for taking the time to read this. I always try hard to solve a problem before submitting it here on Algebra.com
Click here to see answer by ankor@dixie-net.com(15645)

Question 468515: A car is depreciated by 15% p.a. for 4 years and is then valued at $8,150. What was the original value of the car?
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Question 468551: in the examination,52% of the candidates failed in english,42% in mathematics.17% failed in both.find the % of those,who pass in both subjects
Click here to see answer by rfer(12654)

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