Question
Average run scored by a batsman in first βxβ matches
is 60. In next 13 matches he scored runs with an average of 80 so that his overall average increased by 10. Find the value of x.Solution
(60x + 13 Γ 80)/(x + 13) = 70 => 60x + 1040 = 70x + 910 => 10x = 130 => x = 13
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