1/(1+1/3)-1/(1+1/2)

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Last Updated on May 5, 2023

GMAT OFFICIAL GUIDE PS

Solution

We start by simplifying each complex fraction. Let’s multiply the left fraction by 3/3 and the right fraction by 2/2:

3/3(1/(1 + 1/3) = 3/(3 + 1) = ¾

2/2(1/(1 + ½) = 2/(2 + 1) = 2/3

Finally we have 3/4 – 2/3 = 9/12 – 8/12 = 1/12

Answer: D

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