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2006-07-21 03:15:50 · 35 answers · asked by Lady P 1 in Education & Reference Homework Help

35 answers

36.

work:
let 9 be 25% of x.
=> 9=25%*x
=> 9=25/100*x
=> 9=1/4*x
=> 9*4=1/4*x*4
=> 36=x

2006-07-21 03:45:11 · answer #1 · answered by Em 5 · 2 1

You can solve any percentage question like this by putting it into a proportion. To make the proportion, the percentage always goes over 100, so 25 over 100. For the other side of the proportion, you know that 9 is 25% and you want to find out what 100% is, so you put the 9 on the top (since 25 is on the top on the other side of the equation) and X on the bottom (where 100 is on the other side).

25/100 = 9/X

To solve for X, cross multiply and divide.

9 x 100 = 900

900/25 = 36

2006-07-21 03:19:58 · answer #2 · answered by Anonymous · 0 0

There is a REALLY easy way to do this and other kinds of problems - use this formula

IS / OF * % / 100 (is over of times percent over 100)

Your problem is 9 is (so 9 would go in the "is" slot) 25% of what? You are looking for the "OF". So your problem would look like this in the formula:

9 / x * 25/100 Cross mulitply and divide

900 / 25x (the variable, or what you're looking for - the x, is always on the bottom)

900/25 = 36, which is the solution. You can plug any number into any of the slots (except 100 always stays the same) in this formula.

I hope that helps!!!!

2006-07-21 03:23:38 · answer #3 · answered by headshrinker 3 · 0 0

25% is 1/4 of 100% (4 - 25% to make 100%)
9 X 4 = 36

2006-07-21 03:18:12 · answer #4 · answered by Anonymous · 0 0

Does someone have a math test? Yes, 36 is the answer. 25% is a quarter of 100%, so multiply the 9 by 4 to get your answer.

2006-07-21 03:18:12 · answer #5 · answered by jxt299 7 · 0 0

36

2006-07-21 03:20:03 · answer #6 · answered by Lyrical Goddess 4 · 0 0

36

2006-07-21 03:19:16 · answer #7 · answered by Anonymous · 0 0

36

2006-07-21 03:18:43 · answer #8 · answered by AsianPersuasion :) 7 · 0 0

36

2006-07-21 03:18:00 · answer #9 · answered by mom2all 5 · 0 0

36

2006-07-21 03:17:18 · answer #10 · answered by AlphaOne_ 5 · 0 0

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