srinivasskc
Srinivas Kadiyala
What is the average (arithmetic mean) of x,y and z?
1) 3x-2y+7z = 23
2) 4x-3y+5z = 5 and -x+6y-2z = 58
1) 3x-2y+7z = 23
2) 4x-3y+5z = 5 and -x+6y-2z = 58
GMAT Sample Problem: Data Sufficiency averages
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