A batsman scores 98 runs in the $$17^{th}$$ match of his career. His average runs per match increased by 2.5. What is his average before the 17th match?
Let say, average of first 16 match was x.
So, first 17 matches average score isÂ
=(16x+98)/17.
According to question:
(16x+98)/17=x+2.5
or, 16x+98=17x+42.5
or,x=55.5 .
D is correct choice.
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