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    Question

    Average run scored by a batsman in first тАШxтАЩ matches

    is 55. In next 12 matches he scored runs with an average of 90 so that his overall average increased by 10. Find the value of x.
    A 40 Correct Answer Incorrect Answer
    B 30 Correct Answer Incorrect Answer
    C 44 Correct Answer Incorrect Answer
    D 42 Correct Answer Incorrect Answer

    Solution

    (55x + 12 ├Ч 90)/(x + 12) = 65 ┬а=> 55x + 1080 = 65x + 780 => 10x = 300 => x = 30

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