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A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings?

Correct answer: D. 37Computer Online Quiz

  • A. 34
  • B. 35
  • C. 36
  • D. 37Computer Online Quiz

Explanation

Let the average after 16 innings be x runs, so the previous total score was 16x runs. After scoring 85 runs, the new average is x + 3, giving 16x + 85 = 17(x + 3), so x = 34 and the new average is 37 runs. The likely mistake is choosing 34, which is the old average before the 17th innings.

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About Averages

An average represents the total of a set of values divided by the number of values, and a weighted average gives different importance to different groups. Problems involve missing values, combined averages, replacement of observations, and changes in the average, so the total and count must be tracked separately.

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