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    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'.
    A 120 Correct Answer Incorrect Answer
    B 80 Correct Answer Incorrect Answer
    C 70 Correct Answer Incorrect Answer
    D 50 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    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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