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Addition table - GMAT prep question

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by sukrant26 » Sun May 25, 2008 2:33 pm
HI

Can someone help me in understanding the way to solve this question?

Answer is C


Thanks

Sukrant[/spoiler]
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by VP_Tatiana » Mon May 26, 2008 8:37 pm
The way the table works is that you take the sum of the number on the top row with the number on the side to find the value of the entry at their crosshairs.

In that way, we learn that 4 + y = -5, and thus y = -9.

We also learn y + e = n. Plugging in, we have -9 + e = n.

Similarly, we have z + 4 = m and z + e = 10. Subtracting the first equation from the second, we get:

e - 4 = 10 - m, so
e = 14 - m

Plugging this into -9 + e = n, we get
- 9 + 14 - m = n

Thus, 5 = m + n and our answer is C.

Tatiana
Tatiana Becker | GMAT Instructor | Veritas Prep
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by sukrant26 » Thu May 29, 2008 8:37 pm
thanks much...


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by zacharyz » Fri May 30, 2008 4:15 pm
Is this a standard table definition? I wasn't familiar with its definition.
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