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A batsman scores - some runs in his 51st complete inning so that his average increases from 59.6 to 60. The runs scored by the batsman in his 51st inning are
- A75
- B70
- C100
- D80
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CCommunity
Let the total runs scored in 51st innings be a.
Given,
Average runs scored in 50 innings = 59.6
Total runs scored in 50 innings = 59.6 × 50 = 2980
Given,
Average runs scored in 51 innings = 60
Total runs scored in 51 innings = 60 × 51 = 3060
Then,
⇒ a = 3060 - 2980
⇒ a = 80
∴ He scored 80 runs in his 51st innings.
Given,
Average runs scored in 50 innings = 59.6
Total runs scored in 50 innings = 59.6 × 50 = 2980
Given,
Average runs scored in 51 innings = 60
Total runs scored in 51 innings = 60 × 51 = 3060
Then,
⇒ a = 3060 - 2980
⇒ a = 80
∴ He scored 80 runs in his 51st innings.