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m05 q12

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Intern
Intern
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Joined: 27 Oct 2011
Posts: 15
Concentration: Finance, Technology
GMAT Date: 04-10-2012
Followers: 0

Kudos [?]: 4 [0], given: 7

Re: m05 q12 [#permalink] New post 04 Apr 2013, 05:38
Answer A) 5%

Created small table

| Military Exp | No Military Exp |Total
--------------------------------------------------------------------------------
Support war | 4 | (x/5) | x
--------------------------------------------------------------------------------
Don't support war | | |
--------------------------------------------------------------------------------
100

Calculating for x

4+ (x/5) = x
20+x = 5x
x = 5
Verbal Forum Moderator
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Joined: 15 Jun 2012
Posts: 992
Location: United States
Followers: 112

Kudos [?]: 1094 [0], given: 118

Re: m05 q12 [#permalink] New post 04 Apr 2013, 23:59
Although I picked A, but it took me 3 mins :cry:
Word problems are difficult in expressing words to math equation.

My solution is
T = total population
X = total support war

-> 0.2 X = support + no military experience
-> 0.8 X = support + have military experience = 0.04T (4% of population support + have M.experience)

So 0.8X = 0.04T -> X/T = 0.04/0.8 = 5%
A is correct.

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"Designing cars consumes you; it has a hold on your spirit which is incredibly powerful. It's not something you can do part time, you have do it with all your heart and soul or you're going to get it wrong."

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Re: m05 q12   [#permalink] 04 Apr 2013, 23:59
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