the average runs scored by a batsman in 20 matches is 40. in the next 10 match

Question

the average runs scored by a batsman in 20 matches is 40. in the next 10 matches the batsman scored an average of 13 runs. find his average in all the 30 matches?

Options:

A . 31

B . 29

C . 28

D . 30

Answer: Option A
Explanation :

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