the average of 13 numbers is 60. average of the first 7 of them is 57 and that

Question

the average of 13 numbers is 60. average of the first 7 of them is 57 and that of the last 7 is 61. find the 8th number?

Options:

A . 46

B . 32

C . 68

D . 51

Answer: Option A
Explanation :

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