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[solved] Gmat Prep. Q11

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Senior | Next Rank: 100 Posts
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by maxim730 » Wed Mar 14, 2007 5:52 pm
Practise Test 2

Please see image. Thanks for any help. :)

Doh!!. I figured it out, simple stupid error. :( Will post my explanation later on.

Ans.: D
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by Cybermusings » Tue Mar 27, 2007 11:06 am
Let Kate Charge x hours

Therefore Pat charges 2x hours and Mark Charges 3 times of 2x = 6x hours

x+2x+6x = 162

x = 18
Mark charges 6*18 = 108 Hours

Hence the difference = 108-18 = 90 Hours

pretty much a cakewalk
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by BTGmoderatorRO » Fri Sep 29, 2017 2:52 pm
pat (P), kate (K) and mark (M).
P=P
P=2K (twice). therefore, K= P/2
P=(1/3)M. therefore M=3P

P+K+M = 162
P + (P/2) + 3P = 162
(2P+P+6P)/2 =162
9P = 324
P=36

K=36/2= 18
M=3*36= 108

The difference between Kate and Mark is 108-18=90
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