A cricket batsman had a certain average of runs for his 11 innings. In the 12th

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Question

A cricket batsman had a certain average of runs for his 11 innings. In the 12th innings, he made a score of 90 runs and thereby his average of runs was decreased by 5. His average of runs after 12th innings is :

Options:

A . 150

B . 140

C . 155

D . 145

Answer: Option D
Answer: (d)Let the batsman’s average in 11 innings be x runs. ∴ ${11x + 90}/12$ = x-5⇒ 11x + 90 = 12x – 60 ⇒ x = 150∴ Required average = 150 – 5 = 145

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