Get detailed explanations to advanced GMAT questions.

Which of the following is equivalent to ((a+b)/2)+ ((a-b)/3)?

Option A:

2a/5

Option B:

5a/6

Option C:

(5a+b)/6

Option D:

(5a+2b)/6

Option E:

(5a-b)/6

Option C is the correct answer.

Just find the LCM (Here cross multiply):

((a+b)/2)+ ((a-b)/3)

= (3(a+b) +2(a-b))/6

= (3a+3b+2a-2b)/6

= (5a+b)/6

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