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    Question

    A city experienced an average rainfall of 125 cm over the

    first five days of a week, while the last five days recorded an average of 132 cm. If the average rainfall for the entire week was 130 cm, calculate the rainfall on the fifth day.
    A 354 cm Correct Answer Incorrect Answer
    B 375 cm Correct Answer Incorrect Answer
    C 298 cm Correct Answer Incorrect Answer
    D 371 cm Correct Answer Incorrect Answer

    Solution

    ATQ,

    Total rainfall for the first five days = 125 × 5 = 625 cm

    Total rainfall for the last five days = 132 × 5 = 660 cm

    Total rainfall for the whole week = 130 × 7 = 910 cm

    Rainfall on the fifth day = {(625 + 660) – 910} = 375 cm

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