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    Question

    Average run scored by a batsman in first β€˜x’ 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.
    A 10 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 13 Correct Answer Incorrect Answer

    Solution

    (60x + 13 Γ— 80)/(x + 13) = 70 => 60x + 1040 = 70x + 910 => 10x = 130 => x = 13

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