मराठी

A batsman has a mean score of 73 in 19 innings. Find how many runs are to be scored by him in 20th inning so that his mean score becomes 75? - Mathematics

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प्रश्न

A batsman has a mean score of 73 in 19 innings. Find how many runs are to be scored by him in 20th inning so that his mean score becomes 75?

बेरीज
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उत्तर

Given: A batsman has a mean score of 73 in 19 innings and wants his mean to become 75 after 20 innings.

Step-wise calculation:

1. Total runs after 19 innings

= 73 × 19

= 1387

2. Required total runs after 20 innings

= 75 × 20

= 1500

3. Runs needed in 20th inning

= 1500 – 1387

= 113

He must score 113 runs in the 20th inning.

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पाठ 15: Statistics - Exercise 15C [पृष्ठ ३०३]

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नूतन Mathematics [English] Class 9 ICSE
पाठ 15 Statistics
Exercise 15C | Q 12. | पृष्ठ ३०३
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