Question
In a city, the average rainfall for the first five days of
a week was 98 cm, while the average rainfall for the last five days was 105 cm. If the average rainfall for the entire week was 102 cm, determine the rainfall on the fifth day of the week.Solution
ATQ,
Total rainfall for the first five days = 98 × 5 = 490 cm
Total rainfall for the last five days = 105 × 5 = 525 cm
Total rainfall for the whole week = 102 × 7 = 714 cm
Rainfall on the fifth day = {(490 + 525) – 714} = 301 cm
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