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.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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