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

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 Algebra: Percentage and Pie Charts Solvers Lessons Answers archive Quiz In Depth

 Question 26492: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test score? Click here to see answer by venugopalramana(3286)
 Question 26492: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test score? Click here to see answer by stanbon(57361)
 Question 26492: Adam tried to compute the average of his 7 test scores. He mistakenly divided the correct sum of all of his test scores by 6, which yielded 84. What is Adam's correct average test score? Click here to see answer by Earlsdon(6287)

 Question 26549: if 98 girls and 87 boys attend a dance. what percentage of attendees were female Click here to see answer by Earlsdon(6287)

 Question 26706: 9.2% of 180 is what number? 110% of 30 is what number? 15 is 25% of what number? 99 is 180% of what number? 32.4 is 455 of what number? What percent of 7.2 is 45? What percent of 3 is 150? What percent of 50 is 250? 0.06x = 120 0.21x = 1.2 - 0.15x 0.05a + 0.5a = 4.4 0.4x + 0.24(x - 5) = 0.08 0.05x + 0.065(500 - x) = 295 Click here to see answer by AdolphousC(70)

 Question 26702: By Tuesday, 65 students had bought tickets for the dance. This was 42% of the student body. How many students go to Washington School? Click here to see answer by elima(1433)

 Question 26875: there are 27 people in a group. 8 out of the 27 responded. what is the percentage? Click here to see answer by mathrebel(25)

 Question 26874: Hello from cold cold Finland Ok I have the following problem, or actually I have a few problems that are similar but have little idea about how they should be solved. Anyway the problem is as follows: "When the price of a product was reduced by 20%, the sales in euros rose by 4%. Find the percentage increase in the number of products sold." Hope that you don't feel insulted if I mention that euros are the currency used in Finland and most countries in the European Union. Just thought I'd err on the side of caution and mention this fact. Ok that's it really. This question is from an old entrance examination paper for a school that I would like to attend and I would be very grateful for any assistance that you could give me. I took a look at your other percentage problems and found a few quite interesting. Thanks again for any instance that you are able to give. Take care. t. ryan Click here to see answer by bmauger(101)

 Question 26944: I haven't see a problem written this way. What percent is 63 of 84? Thanks Click here to see answer by mbarugel(146)

 Question 26983: I'm trying to help my daughter with percentages but that is one of my weak points in math so if someone could help me out I would appreciate it. The question is: The two Largest Greak Lakes are Lake Superior and Lake Huron. Lake Superior has an area of 84,500 square kilometers, while Lake Huron's area is 63,500 square kilometers. How much larger is Lake Superior than Lake Huron. Her choices are [a] 52.5% larger [b] 19.8% larger [c] 27.4% larger [d] 33.1% larger. Thanks for any help Click here to see answer by longjonsilver(2297)

 Question 27343: Here is a word problem In 2002 the average male with a bachelors degree or above earned about \$78,000. This was 66% more than the average woman with a comparable background. How much did the average woman with a comparable background earn? The answer is \$46,987.95. However I cant find the right equation to achieve this answer. Here's two examples of what I've tried (a=average for women) \$78,000= a + 0.66 -0.66 -0.66 _________________ 7999.34=a not correct \$78,000(0.66)=a \$51480=a not correct I need help! Thx. Click here to see answer by bmauger(101)

 Question 27412: A crazed subway sandwich shop employee hacks an 8 foot submarine sandwich into four unequal pieces with a machete. The first piece is one half as long as the second piece, the third piece is 12 inches longer than the second, and the fourth piece is the same length as the second. How long is the longest piece of sandwich? Click here to see answer by stanbon(57361)

 Question 27422: How much water should bbe added to 3 liters of a 60% acid solution to obtain a 25% acid solution? Click here to see answer by Paul(988)

 Question 27482: The final cost of the tv is \$3,706.30. The local sales tax is 8.1%. What is the labeled pre-tax price? This is what I did but am not sure if correct. 3706.30/108.1% (converted 8.1% + 100=108.1) then... 3706.30/1.08= \$3,431.76 (my answer) Is this correct? Click here to see answer by stanbon(57361)

 Question 27573: when trying to find the percent of an number where do you start. example: 2% out of 100 3%of 100 6% of 65 Click here to see answer by josmiceli(9681)

 Question 27572: when trying to find the percent of an number where do you start. example: 2% out of 100 3%of 100 6% of 65 Click here to see answer by longjonsilver(2297)

 Question 27593: 80% of \$720.25 is what? And can you provide the solution equations? Thanks, Belinda Click here to see answer by wuwei96815(245)
 Question 27593: 80% of \$720.25 is what? And can you provide the solution equations? Thanks, Belinda Click here to see answer by askmemath(368)

 Question 28118: If I have 80 apartments and 79 are rented What will be the easyest method to calculate the percentage. I've been multiplyng 79*80%. Click here to see answer by Earlsdon(6287)

 Question 28174: Hello! I homeschool my daughter, and have the answer to this particular problem, but can't figure out how they arrived at the answer. We may end up finding out that I have to call them to tell them that THEIR answer is incorrect. :))) "A man bought a desk for \$125. After spending \$75 on repairs, he sold the desk for \$350. What was his percent of profit based on the cost?" The answer in the teacher manual is 120%. Can anyone help me, so that I can better explain to my daughter the steps taken to solve this problem? I tried x over 100 times \$150 (profit) = \$200 (cost). Help! Thanks! Click here to see answer by Earlsdon(6287)

 Question 28391: I am trying to help my son with his homework but the book does not show an example for the problem we are trying to solve. We are working on percent proportion. The problem is 19.8 is what percent of 36. Can you help me with breaking this problem down so that we might understand how to work it out. Thank you, Julie Morehouse Click here to see answer by Earlsdon(6287)
 Question 28391: I am trying to help my son with his homework but the book does not show an example for the problem we are trying to solve. We are working on percent proportion. The problem is 19.8 is what percent of 36. Can you help me with breaking this problem down so that we might understand how to work it out. Thank you, Julie Morehouse Click here to see answer by khloe(1)

 Question 28548: When Justin was 10 years old he was 58 inches tall. He is now 15% taller. How many inches tall is he now? Click here to see answer by emmychan(11)

 Question 28829: On a math test, 12 students earned an A. This number is exactly 25% of the total number of students in the class. How many students are in the class? Click here to see answer by xcentaur(357)

 Question 29331: How much interest will I have to pay if I borrow \$6000 at an annual rate of 13% for a period of 8 months? Click here to see answer by ikdeep(226)

 Question 29344: if 45% is \$50.40, what was the original number? Click here to see answer by Nate(3500)

 Question 29417: What is the wholesale price of a CD player if the percent increase is 75% and the amount of increase is \$30? Click here to see answer by ikdeep(226)

 Question 29680: the deer outnumbered the wolves by 140 percent.If there was 480 deer in the clearing how many wolves were present? Click here to see answer by venkat52(2)

 Question 29737: what is the % rise of 280-360 (280 to 360)? Click here to see answer by stanbon(57361)

 Question 29775: I really forgot how do do this type of problem \$15 is what percent of \$75? 4% of what number is 21? What number is 12.5% of 56? Could you please help me? Thank you -Rozz Click here to see answer by Cintchr(481)

 Question 28468: Express 37.5% as a common fraction. 7 2/5% of x is equal to 74. Solve for x. Click here to see answer by Yoan(9)