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    Question

    A team's average score in the first 14 matches was a

    certain number. In the next 7 matches, their average was 84 runs, which increased the overall average by 6. What was the average in the first 14 matches?
    A 64 Correct Answer Incorrect Answer
    B 66 Correct Answer Incorrect Answer
    C 68 Correct Answer Incorrect Answer
    D 60 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Let, average score in first 14 matches is x So, (14 × x + 7 × 84)/21 = x + 6 Or, 14x + 588 = 21x + 126 Or, 7x = 462 Or, x = 66

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