self Maths Puzzle

The batting average of a cricket player is 72 runs per inning. In the next 4 inning, he could score only 80 runs and thereby decreases his batting average by 2 runs. What is total number of inning played by him till last match

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ANSWER: 104
Suppose,no of matches played with 70 average is x.
So, total runs = 70x
now adding 4 innings no of matches is (x+4)
after 4 innings average decreases to 70
So,total runs then will be 70(x+4)
So the equation is -> 72x + 80 = 70(x+4)
72x - 70x = 280 - 80 -> x = 100
total matches = 100 + 4 = 104
6 years agoHelpfull: Yes(2) No(0)

self Other Question

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