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# What is the value of a − b ?

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Senior Manager
Affiliations: UWC
Joined: 09 May 2012
Posts: 362
GMAT 1: 620 Q42 V33
GMAT 2: 680 Q44 V38
GPA: 3.43
WE: Engineering (Entertainment and Sports)
What is the value of a − b ?  [#permalink]

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27 May 2012, 08:32
1
00:00

Difficulty:

5% (low)

Question Stats:

91% (00:41) correct 9% (00:43) wrong based on 200 sessions

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What is the value of a − b ?

(1) (10+a)/c = 1
(2) (15+b)/c = 1
Math Expert
Joined: 02 Sep 2009
Posts: 52344
Re: What is the value of a − b ?  [#permalink]

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28 May 2012, 02:06
macjas wrote:
What is the value of a − b ?

(1) (10+a)/c = 1
(2) (15+b)/c = 1

Each statement alone is clearly insufficient to answer the question. When taken together we have: c=10+a and c=15+b --> 10+a=15+b --> a-b=15-10=5. Sufficient.

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Re: What is the value of a − b ?  [#permalink]

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29 Mar 2017, 04:39
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Re: What is the value of a − b ? &nbs [#permalink] 29 Mar 2017, 04:39
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# What is the value of a − b ?

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