Question

The batting average for 40 innings of a cricketer is 60 runs. If two innings are excluded the average of his remaining 38 innings is 55 runs. What is the sum of these two innings excluded?

Answer 1

Given,

Batting average of a cricketer for 40 innings = 60

Average if two innings are excluded = 55

To Find,

The sum of the innings that were excluded.

Solution,

Let the two excluded innings be x and y.

So,

In first case

(x+y....)/40 = 60

x+y+... = 2400

Now,

When two innings are excluded,

Average/38 = 55

average = 55*38 = 2090

Now

x+y = 2400-2090 = 310

Hence, the sum of the two excluded innings is 310.