Question
Average run scored by a batsman in first ‘x’ matches
is 20. In next 5 matches he scored runs with an average of 60 so that his overall average increased by 10. Find the value of x.Solution
(20x + 5 × 60)/(x + 5) = 30 => 20x + 300 = 30x + 150 => 10x = 150 => x = 15
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