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

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Algebra: Percentage and Pie Charts

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Question 3678: how do you subtract a percentage from a number ?
152 - 1.45% =first you need to find out what is 1.45%of 152 my favorite solution to percentages is
%/100 =is/of
1.45%/100 =blank over 152
multiply 152 times 1.45% then divide by 100 you get 2.204
subtract 2.204 from 152 to get 149.796 you will need to round this and you will have the correct answer

Click here to see answer by Abbey(339)

Question 4194: Jason got a 7 5 on a math test. He was allowed to go to the math lab and take a retest. He increased his score to 84. What was the percent of increase?
Click here to see answer by rapaljer(3620)

Question 5714: what is the 25% of 27000 rupees?what is the increased amount of money?
Click here to see answer by arunpaul(104)

Question 5784: 15% of 11 million
5% of 11 million
Click here to see answer by longjonsilver(2297)

Question 5917: How do I work out what percentage one figure is of another. i.e. If I have an overall figure (B) of 134,789 and part of this is A which equals 27,987 what percentge is A of B?
Many thanks
Click here to see answer by Abbey(339)

Question 5921: how much money is 45%of 250$
Click here to see answer by longjonsilver(2297)

Question 6417: what is 20% of 625.57
The answer would be 125.114, but the way you solve it is by muliplying 625.57 by .20 (which is 20% with the decimal moved two places to the left).

Click here to see answer by digitalbeachbum(7)

Question 6456: What formula do I use to show what percentage of 1,664 is 18?
If Ann works a 32-hour week, except for 2 months of the year, her actual hours worked in a year is 1,646, not (32 * 52). For 2 months, she works 30 hours, which reduces her yearly total by 18 hours. Since her leave is awarded based on a 32 hour week, we need to reduce that award by whatever percentage 18 is of the full yearly hours, as above.
Annual vacation leave for 32-hour week = 128 hours
" sick " = 76 hours
The best guesstimate is .01% which is of course closer to 17.25 hours, and could be used for this purpose, but is there a better formula?
Click here to see answer by longjonsilver(2297)

Question 5937: How would you express 5/9 as a percent
Click here to see answer by Mike(39)

Question 6562: 1. The width of a rectangle is 10 feet less than the length, find the length of each side if the perimeter is 100 feet.
Click here to see answer by ichudov(404)

Question 6564: what is 40% of £6.50?
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Question 6673: WHAT IS THE FORMULA TO FIGURE OUT WHEN YOU GET A RAISE WHAT THE PERSANTAGE IS.
EXAMPLE IF A PERSON MAKES $12.27 PER HOUR AND NOW THEY MAKE $12.62 PER HOUR HOW DO YOU FIGURE WHAT % YOUR RAISE IS?
Click here to see answer by Earlsdon(4900)

Question 6669: If we raised $14,550 last year in a fundraising campaign and 19,400 this year what percentage increase is that? I think it has something to do with dividing the difference of 4850 by one of the numbers and I think it is a 25% increase but I wanted to check.
Thanks!
Monica
Click here to see answer by prince_abubu(198)

Question 6708: How do you figure a percentage profit on cost?
If you have a item with the cost of $150.00 and want to make 35% profit on it what formula do you use? Is that called gross profit on cost?
Thanks,
Ron.
Click here to see answer by prince_abubu(198)

Question 6959: MR MARSH LEFT AN ESTATE AMOUNTING TO 24,000. ACCORDING TO HIS WILL ,10% WAS TO BE GIVEN TO A COLLEGE, 15% TO A CHURCH AND THE REMAINDER WAS TO BE DIVIDED EQUALLY AMOUNG 3 NEICES. HOW MUCH MONE DID EACH NIECE RECEIVE?
DO YOU MULTIPLY BOTH PERCENTS BY 24,000 FIRST?
Click here to see answer by longjonsilver(2297)

Question 6990: what is the decimal for 45%
Click here to see answer by bonster(299)

Question 7222: Mina ran 100 metre in 9.9 seconds. There was a 10% improvement from her previous best time. What was her previous best time?
Click here to see answer by AK(1)

Question 7424: How do I draw a picture to represent 150%
Click here to see answer by prince_abubu(198)

Question 7780: The rice consumption in a certain city was 80 000 tonnes in 1995.By 2000, the rice consumption had increased by 24%.If the consumption of rice in the city continues to increase at the same rate, i.e, 24% every 5 years, find the consumption of rice in the city in 2005.

Click here to see answer by mathwhiz(13)

Question 7785: how do i work out 3% solution from a 6% solution of 1.5ml hydrogen peroxide solution?
Click here to see answer by pvrbrahmam(12)

Question 7947: A 131 lb. person has 84 lbs. of water in their body. What percent of their mass is the water?
Click here to see answer by longjonsilver(2297)

Question 7946: -3/x=83 is this a linear equation?
Click here to see answer by longjonsilver(2297)

Question 8011: 64 is 125% of (blank)
Click here to see answer by CharStar(110)

Question 8446: 75% of 42
Click here to see answer by drglass(89)

Question 8453: Please help! A little rusty with math...
A can of tomatoes is on sale at 20% off for 64 cents. What is the normal selling price of the tomatoes?
Now I know the answer is 80 cents, but I don't know how that answer was found.
When I try and solve, I come up with 76.8 cents. There has to be something I'm forgetting to do.
Thanks for your help.
Click here to see answer by Earlsdon(4900)

Question 3347: 22 is 80% of what?/ 32 is whatt percent of 56?/ and if x is 8 when y is 18, and x and y vary directly, what is the value of y when x is 10?
Click here to see answer by mrduffner(11)

Question 9112: nine is 3/5 of what number? 3,15,27,or none of these? thanks for the help!!!!!!!!!!!!!!!!!!!!!!!
Click here to see answer by sabanasir(22)

Question 9073: please help mw with this problem:what percent is equal to the fraction 7/8/
Click here to see answer by sabanasir(22)

Question 9335: ---
.45 What is the fractional equivalent? (45/100) but what does the line above the number mean?
Click here to see answer by DWL(56)

Question 9346: I posted this earlier but the SOLID LINE above the number did not print out correctly when my question was posted. The question is: what does a solid line above the number .45 mean? I am supposed to rewrite the number ( .45 with a solid line above it) as a fraction. Would it be different than the normal
45/100 ? Thanks so much.
Click here to see answer by rapaljer(3620)

Question 9359: I was able to solve Marilyn Savant's Monty Hall question yet this one fooled me at first because intuitively I would add the percentages in the following question and then solve for the final value discount however the “correct answer” requests you to solve using a different method (solve for the first discount and proceed to solve for the next discount)
I just want to know why you would solve this way .8 x .85 x 450 = $306 and not this way .65 x 450 = $292.50…
"Employees of a discount appliance store receive an additional 20% off of the lowest price on an item. If an employee purchases a dishwasher during a 15% off sale, how much will he pay if the dishwasher originally cost $450?"

Click here to see answer by longjonsilver(2297)

Question 9365: (-7)x(+3)= the answers are....-4, -21, -10, or 4
Click here to see answer by longjonsilver(2297)

Question 9364: (-3)-(-9)= the answers are.....-12, 12, -6,or 6
Click here to see answer by longjonsilver(2297)

Question 9367: (+36)divided by (-6)= the answers are.....-6, 6, 30, or -30
Click here to see answer by longjonsilver(2297)

Question 9371: which digit is in the thousands' place in the number 79,582.3416?
Click here to see answer by longjonsilver(2297)

Question 9370: 18w=9^2 theanswers are....4&1/4, 5&1/9, 1, or none of these
Click here to see answer by longjonsilver(2297)

Question 9370: 18w=9^2 theanswers are....4&1/4, 5&1/9, 1, or none of these
Click here to see answer by jawaidak(3)

Question 9373: when the sum of 3.0 and 5.0 is subtracted from the product of 3.0 and 5.0, what is the difference?(the answers are....23.0, 20.0, 7.0, or none of these)
Click here to see answer by glabow(165)

Question 9114: sixteen is 25% of what number?..................... 4,64,40,or all of these?
Click here to see answer by glabow(165)

Question 9368: equal fractions have equal....numerators, cross products, none of these or demonitors?
Click here to see answer by rapaljer(3620)

Question 9410: a maths exam contained two problems. Problem A was solved by 70% of the students. Problem B was solved by 60%. Every students solved at least one of the problems. Nine students solved both problems. how many students sat the exam?
Click here to see answer by rapaljer(3620)

Question 9419: how do i convert .004 into a percentage?
Click here to see answer by DWL(56)

Question 9475: I need the answer to this question asap!!
A pair of jeans cost $39.50.What is the total cost of the jeans with tax??
Click here to see answer by prince_abubu(198)

Question 9703: I dont get how to do 20% of 45
Click here to see answer by prabhjyot(164)

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