The average score of a batsman in twenty matches is 15 and in twenty-five other matches is 24. Find the average score in all the forty-five matches.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 20.
The average score in twenty matches = 15
Total score in twenty matches = 15 × 20 = 300
The average score in twenty-five matches = 24
Total score in twenty-five matches = 24 × 25 = 600
Total number of matches = 20 + 25 = 45
Average = (300 + 600)/45 = 900/45 = 20
Therefore, the average score in all forty-five matches is 20.