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Question from Manhattan GMAT practice test: word problem

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Question from Manhattan GMAT practice test: word problem

by jrikhraj » Sat Sep 11, 2010 7:32 am
If Jim earns x dollars per hour, it will take him 4 hours to earn exactly enough money to purchase a particular jacket. If Tom earns y dollars per hour, it will take him exactly 5 hours to earn enough money to purchase the same jacket. How much does the jacket cost?

(1) Tom makes 20% less per hour than Jim does.

(2) x + y = $43.75

Can anyone help me with this?

The OA is B
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Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
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by 4GMAT_Mumbai » Sat Sep 11, 2010 10:02 am
Hi,

Preprocessing the question - 4 times Jim = 5 times Tom

0.8 Jim = Tom

or

0.8 x = y

Statement 1:

0.8 Jim = Tom. This does not provide any information that we do not already know.

Statement 2:

x + y = $43.75

x + 0.8x = 43.75

x = 4375 / 180. Price of Jacket = 4x. = 4 times 4375 / 180. Hence, Suff.

Is the answer B. Pls clarify. Thanks.
Naveenan Ramachandran
4GMAT, Dadar(W) & Ghatkopar(W), Mumbai
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Junior | Next Rank: 30 Posts
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by jrikhraj » Sat Sep 11, 2010 10:48 am
THanks. The OA is B
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