A batsman in his 10th inning makes a score of 70 runs and thereby incr

1.	A batsman in his 10th inning makes a score of 70 runs and thereby increases average score by 1. Find his average after 10th inning?1. 602. 613. 624. 63
Answer» Correct Answer - Option 2 : 61 Given: 10^th inning score = 70 Average increment = 1 Concept: Average score = Total scores / Total number of innings Solution: Let average score before 10^th inning = p New average score after 10^th inning = p + 1 Total score before 10^th inning = 9p Average = ⇒ (9p + 70) / 10 = p + 1 ⇒ 9p + 70 = 10p + 10 ⇒ 10p - 9p = 70 - 10 ⇒ p = 60 ∴ Average after 10^th inning = p + 1 ⇒ 60 + 1 ⇒ 61

A batsman in his 10th inning makes a score of 70 runs and thereby increases average score by 1. Find his average after 10th inning?1. 602. 613. 624. 63

Answer» Correct Answer - Option 2 : 61

Given:

10^th inning score = 70

Average increment = 1

Concept:

Average score = Total scores / Total number of innings

Solution:

Let average score before 10^th inning = p

New average score after 10^th inning = p + 1

Total score before 10^th inning = 9p

Average =

⇒ (9p + 70) / 10 = p + 1

⇒ 9p + 70 = 10p + 10

⇒ 10p - 9p = 70 - 10

⇒ p = 60

∴ Average after 10^th inning = p + 1 ⇒ 60 + 1 ⇒ 61

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A batsman in his 10th inning makes a score of 70 runs and thereby increases average score by 1. Find his average after 10th inning?1. 602. 613. 624. 63

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