SSC Government Jobs Exams Numerical Ability Averages

A cricketer played 80 innings and scored an average of 99 runs. His score is in the last inning is zero run. To have an average of 100 at the end, his score in the last innings should have been

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TOTAL=80*99=7920
TOTAL+X/81=100
TOTAL+X=8100
TOTAL+X-TOTAL=180
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