1.

A batsman makes 100 runs in the 25th match of his career. His average runs per match increases by 1.4. Find his average before the 25th match.1). 652). 553). 754). 45

Answer»

LET his original AVERAGE = t

⇒ Sum of score before 25th MATCH = 24 × t

⇒ Sum of score after 25th match = 24t + 100

⇒ Average after 25th match = (24t + 100)/25

ATQ,

⇒ t + 1.4 = (24t + 100)/25

⇒ 24t + 100 = 25t + 35

⇒ t = 65

∴ His average before 25th match is 65.


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