Question

Batsman scored 18 runs in his 18th innings and that makes his average 18. find his average upto the 17th innings

Answer 1

Hello guys here we are .. I will explain this in a basic way
First we take first sentence ...so normally he scored some runs up to 17 innings and in 18 innings he scored 18 runs which means

x + 18
--------- = 18
18

so the above equation goes like this...his total average 18(given) and totally 18 innings(given) and x is the total runs in 17 innings + 18 innings runs which is 18.

solving that you get x=306 ( which is , In 17 innings total runs scored by the batsman)
so 

306
------- = 18 (that's the answer :) )
17

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