Q.

A batsman scores 87 runs in the 21st match of his career. His average runs per match increases by 2. What was his average before the 21st match.

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a

43

b

46

c

45

d

44

answer is A.

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Detailed Solution

Let the average runs of batsman in 20 match = x According to question

(x+2)=20x+8721

or 20x+87=21x+42

x = 45 

So the average runs of batsman before 21 match = 45

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