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    Question

    A player’s average score in first 10 games was a

    certain number. In the next 10 games, his average score was 90, due to which his overall average increased by 10. What was his average in the first 10 games?
    A 70 Correct Answer Incorrect Answer
    B 75 Correct Answer Incorrect Answer
    C 80 Correct Answer Incorrect Answer
    D 85 Correct Answer Incorrect Answer

    Solution

    Let, average score in first 10 games is x So, (10 × x + 10 × 90)/20 = x + 10 Or, 10x + 900 = 20x + 200 Or, 10x = 700 Or, x = 70

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