Question

A batsman make a score 111 run in the 10th match and thus increase his average run per by 5 .what will be his average after the 10th match

Answer 1

let avg of 9 match = x
so total runs till 9 match = 9x
.. {9x + 111} ÷ 10 = x +5
9x + 111 = 10x + 50
x = 61
so the avg after 10 match is = 61 + 5 = 66

Answer 2

Refer the attachment.