In the addition table shown above, what is the value of M+N?

[blange1984]

The question involved something called an addition table that I had never seen before. (imagine there is a horizontal line running beneath +X,Y & Z and a vertical line between 4, E & F and -1, 7 & 2

Question:

+ X Y Z
4 -1 -5 M
E 7 n 10
F 2 -4 5


In the addition table shown above, what is the value of M+N?


- 19
4
5
6
22

[dbernst]

This question is less complex than it appears. In the "addition table," the value from the vertical column + the value from the horizontal row is expressed where the two intersect. For example, 4 + X = -1, since the row with X and the column with 4 intersect at -1.
Since 4 + X = -1, X = -5
Following the same logic,
4 + Y = -5, so Y = -9
E + X = 7, so, E + -5 = 7, and E = 12
E + Y = N, so 12 + -9 = N, and N = 3
E + Z = 10, so 12 + Z = 10, and Z = -2
4 + Z = M, so 4 + -2 = M, and M = 2

M + N = 3 + 2 = 5. The correct answer is C

Hope that helps! Also, please cite the specific practice test or other source material, along with question the number, on future inquiries. Thanks.
-dan

The question involved something called an addition table that I had never seen before. (imagine there is a horizontal line running beneath +X,Y & Z and a vertical line between 4, E & F and -1, 7 & 2

Question:

+ X Y Z
4 -1 -5 M
E 7 n 10
F 2 -4 5

In the addition table shown above, what is the value of M+N?
- 19
4
5
6
22

[Nedaari]

Thanks Dan, I had the question on GMAC #1.

[JonathanSchneider]

: )

[Gerald.M.Williams]

The value at X.4 was +1 in the GMAC test and not -1 as shown.
Question:

+ X Y Z
4 -1 -5 M
E 7 n 10
F 2 -4 5

[RonPurewal]

The value at X.4 was +1 in the GMAC test and not -1 as shown.
Question:

+ X Y Z
4 -1 -5 M
E 7 n 10
F 2 -4 5

if this is a GMAC question, than it has been posted in the wrong folder (this folder is for manhattan gmat questions only).

therefore, if there are any further questions on this problem, please create a new thread in the GMAT PREP MATH folder.

thanks!