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tariqjavaid


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Subject : GAT Preparation Questions!
If the average (arithmetic mean) of x and y is 60 and the average (arithmetic mean) of y and z is 80, what is the value of z - x?
A. 70
B. 40
C. 20
D. 10
E. It Cannot Be Determined From The Information Given.

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Posted on July, 03 2013 01:08:44 PM