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DS - Least common denominator

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by karthikpandian19 » Mon Jun 11, 2012 5:36 am
Given that c and d are positive integers, what is the value of d in the fraction c/d ?

1. The least common denominator of c/d and 1/6 is 42.

2. c=5
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by Brent@GMATPrepNow » Mon Jun 11, 2012 6:23 am
karthikpandian19 wrote:Given that c and d are positive integers, what is the value of d in the fraction c/d ?

1. The least common denominator of c/d and 1/6 is 42.

2. c=5
The correct answer is E

case a) the least common denominator of 5/7 and 1/6 is 42.
case b) the least common denominator of 5/42 and 1/6 is 42.

Since d can equal either 6 or 42, the answer is E

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Brent
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by karthikpandian19 » Mon Jun 11, 2012 2:54 pm
OA is E
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Karthik
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