A cricketer played 80 innings and scored an average of 99 runs. His score 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.
Correct Answer: 80 runs
Explanation:
Let the required runs be N. According to the question,
(80 x 99 + N) / 80 = 100
⇒ 7920 + N = 8000
⇒ N = 80
