New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    Average run scored by a batsman in first ‘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 × 80)/(x + 13) = 70 => 60x + 1040 = 70x + 910 => 10x = 130 => x = 13

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