The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?

Question: The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?

Solution:
Average = 32
So, total = 32 × 10 = 320.

Now increase in average = 4
So, new average = 32 + 4 = 36

Total runs after next innings = 36 × 11 = 396
∴ Runs made in the 11th inning = 396 - 320 = 76