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If m > 0 and x is m percent of y, then, in terms of m, y is

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If m > 0 and x is m percent of y, then, in terms of m, y is [#permalink] New post 22 Oct 2010, 04:51
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If m > 0 and x is m percent of y, then, in terms of m, y is what percent of x?

A. 100m
B. 1/100m
C. 1/m
D. 10/m
E. 10000/m
[Reveal] Spoiler: OA

Last edited by Bunuel on 08 Jun 2012, 01:41, edited 1 time in total.
Edited the question and added the OA
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Re: If m > 0 and x is...... [#permalink] New post 22 Oct 2010, 05:45
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pzazz12 wrote:
If m > 0 and x is m percent of y, then, in terms of m, y is what percent of x?

A. 100m

B. 1/100m

C. 1/m

D. 10/m

E. 10000/m


x is m percent of y --> y*\frac{m}{100}=x;
y is what percent of x --> x*\frac{?}{100}=y --> ?=\frac{y}{x}*100 --> as from above \frac{y}{x}=\frac{100}{m} then ?=\frac{y}{x}*100=\frac{100}{m}*100=\frac{10,000}{m}.

Answer: E.
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Re: If m > 0 and x is...... [#permalink] New post 31 Oct 2010, 03:55
Answer: E (for me)
OA?? (Please! always provide Official Answer and if you don't know then mention that you don't know it)
My explanation was same as Bunuel's, so not going to write the explanation.
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If m > 0 and x is m percent of y, then, in terms of m, y is what [#permalink] New post 10 Feb 2013, 03:28
marcusaurelius wrote:
If m > 0 and x is m percent of y, then, in terms of m, y is what percent of x?

a) 100m
b) 1/100m
c) 1/m
d) 10/m
e) 10,000/m

Can someone solve this using a picking numbers strategy?


Let's imagine that m= 2 and y=100
x= 2% from 100 which makes 2.
Now we need to find what percent is y from x.
Y=100 and x=2.
100*100/2, since 2=m, the answer is 10,000/m.

Hope this helps.
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Re: If m > 0 and x is m percent of y, then, in terms of m, y is [#permalink] New post 03 May 2013, 09:02
here is my solution, can someone pl tell what wrong am I doing?

Y=20
x=2
m=10

now Y is (20*100)/2 = 1000% of x. that is, y is 1000% x
and in the answer choices choice 1 I.e 100m is equal 1000 so I marked 1 as answer choice
what is wrong with my approach?
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Re: If m > 0 and x is m percent of y, then, in terms of m, y is [#permalink] New post 03 May 2013, 11:09
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nikhil007 wrote:
here is my solution, can someone pl tell what wrong am I doing?

Y=20
x=2
m=10

now Y is (20*100)/2 = 1000% of x. that is, y is 1000% x
and in the answer choices choice 1 I.e 100m is equal 1000 so I marked 1 as answer choice
what is wrong with my approach?


There is nothing wrong with your approach. Just that you have two options giving the same answer(A and E). Thus, the value of x,y and m have to be changed.A smarter value to use CAN be : assume that m=100%, that is x=y. Thus, our answer would also be 100% only. Plug-in the value of m=100% and you will see that only E matches.
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Re: If m > 0 and x is...... [#permalink] New post 25 Sep 2013, 04:08
Bunuel wrote:
pzazz12 wrote:
If m > 0 and x is m percent of y, then, in terms of m, y is what percent of x?

A. 100m

B. 1/100m

C. 1/m

D. 10/m

E. 10000/m


x is m percent of y --> y*\frac{m}{100}=x;
y is what percent of x --> x*\frac{?}{100}=y --> ?=\frac{y}{x}*100 --> as from above \frac{y}{x}=\frac{100}{m} then ?=\frac{y}{x}*100=\frac{100}{m}*100=\frac{10,000}{m}.

Answer: E.


You are Genius Bunuel.. I waas getting so confused in this :!: , thankew so much... :)
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Re: If m > 0 and x is m percent of y, then, in terms of m, y is [#permalink] New post 31 Jan 2014, 19:26
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key to solve such problems is to know the below basic rule

To convert Fraction to % => Multipy by 100
eg 1/4 = 25%

To convert % to Fraction => Divide by 100
eg 25% = 25/100 = 1/4
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Re: If m > 0 and x is m percent of y, then, in terms of m, y is   [#permalink] 31 Jan 2014, 19:26
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