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The figure above shows two entries, indicated by m and n, in

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The figure above shows two entries, indicated by m and n, in [#permalink] New post 20 Jan 2008, 02:18
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The figure above shows two entries, indicated by m and n, in an addition table. What is the value of n + m?

(1) d + y = -3
(2) e + z = 12
[Reveal] Spoiler: OA

Last edited by Bunuel on 11 Jan 2014, 04:10, edited 1 time in total.
Renamed the topic, edited the question, added the OA and moved to DS forum.
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Re: addition table [#permalink] New post 20 Jan 2008, 02:43
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Information from table:
d+z=m (1)
e+y=n (2)

need to find "m+n"

A: d+y=-3, INSUFF - no information about n
B: e+z=12, INSUFF - no information about m

Adding 1 and 2 (under information)

(d+y)+(e+z)=m+n=12-3=9 (use both A and B)
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Re: The figure above shows two entries, indicated by m and n, in [#permalink] New post 10 Jan 2014, 20:45
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Re: The figure above shows two entries, indicated by m and n, in [#permalink] New post 16 Nov 2014, 20:49
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Please can you add a tag to this question as GMAT Prep Exam Pack 1.
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Re: The figure above shows two entries, indicated by m and n, in [#permalink] New post 17 Nov 2014, 00:55
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Re: The figure above shows two entries, indicated by m and n, in [#permalink] New post 01 Jan 2016, 18:25
There must be something I'm completely unaware of because how does box DY and box EZ relate to the box values the question asks for?
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Re: The figure above shows two entries, indicated by m and n, in [#permalink] New post 03 Jan 2016, 09:49
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Re: The figure above shows two entries, indicated by m and n, in [#permalink] New post 04 Jan 2016, 03:33
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Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.


The figure above shows two entries, indicated by m and n, in an addition table. What is the value of n + m?

(1) d + y = -3
(2) e + z = 12

When you modify the original condition and the question, n+m=(e+y)+(d+z)=(e+z)+(y+d)=?. Then you need all 1) & 2) and therefore the answer is C.


 Once we modify the original condition and the question according to the variable approach method 1, we can solve approximately 30% of DS questions.
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Re: The figure above shows two entries, indicated by m and n, in   [#permalink] 04 Jan 2016, 03:33
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