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A batsman in his 12th innings makes a score of 120, and thereby increases his average by 5. The average score after 12th innings is
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- 60
- 55
- 65
- 70
- 60
Correct Option: C
Given that , A batsman in his 12th innings makes a score = 120
and his average increases by = 5
Let Average runs after 12 innings = n
Average runs after 11 innings = n – 5
According to the question,
⇒ 12n = (n – 5) × 11 + 120
⇒ 12n – 11n = 120 – 55
⇒ n = 65
