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A cricketer scored some runs in his continuous 9 innings. He scored 100 runs in his 10th innings and increase his average by 8 runs. What was the average of his runs at the end of 10 th innings ?
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- 20
- 24
- 28
- 32
- None of the above
Correct Option: C
Let average of a inning = x
Total runs = 9x
According to the question,
(9x + 100) /10 = x + 8
⇒ 9x + 100 = 10x + 80
x = 20
Average after 10 inning = 20 + 8 = 28
