Question

a batsman makes a score of 87 runs in the 17th inning and thus increased his average by 3. find the average after 17th inning

Answer 1

Let the average after 7th inning = x

Then average after 16th inning = x - 3

16(x-3)+87 = 17x

 x = 87 - 48 = 39
hope it helps to you.

Answer 2

Refer the attachment.