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The average weight of a group of 53 girls was calculated as 58 kg It was later discovered that the w...........

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    The average weight of a group of 53 girls was calculated as 58 kg. It was later discovered that the weight of one of the girls was read as 65 kg. Whereas her actual weight was 45 kg. What is the actual average weight of the group of 53 girls? (rounded off to two digits after decimal)

    58.62 kg.

    Incorrect Answer

    58.37 kg.

    Incorrect Answer

    57.37 kg.

    Incorrect Answer

    57.62 kg.

    Correct Answer
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    Explanation:

    Actual weight of 53 girls
    = 53 × 58 + 45 – 65
    = 3074 + 45 – 65 = 3054 kg
    ∴ Required actual average weight
    = 3054/53 = 57.62 kg.

    By: Pranav Gupta
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