Question
A cricketer scored an average of 65 runs per match in
the first 20 matches. In his next 10 matches, he scored runs with an average of ‘x’ runs per match so that his overall average becomes 70 runs per match. Find the value of 'x'.Solution
ATQ, {65 × 20 + 10 × x} / (20 + 10) = 70 Or, 10x + 1300 = 70 × 30 = 2100 Or, 10x = 800 Or, x = 80
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