GMAT Prep - Addition question

[ssbhowmick]

For the given addition table, what is the value of m+n ?


a. -19
b. 3
c. 5
d. 22
e. 17
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[Talkativetree]

Is that the entire problem? and are 1-5 the answers, or the addition table?

[ssbhowmick]

The 1 to 5 are the answers ..

[crackgmat007]

Is the answer C?

[Talkativetree]

what or where is the addition table? I'm not seeing anything...

[ssbhowmick]

Hi crackgmat.. How did you get the ansers as C ?

Could you post the steps ?

[Talkativetree]

X+4=1
X=-3

Y+4=-5
y=-9

X+E=7
E=10

Y+E=N
N=1

Z+E=10
Z=0

Z+4=m
M=4

M+N=4+1=5

[ssbhowmick]

thanks talkativetree.. NOw I understand why I was not getting the answer..my approach was totally wrong..