The daily average rainfall on 5 days of a week is 30 mm. If the rainfall on 6th and 7th day are 42 mm and 25 mm respectively, then what is the average daily rainfall for the 7 days?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 31
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Understanding |
Application |
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Given: The daily average rainfall on 5 days of a week is 30 mm. Total rainfall in 5 days = 5 × 30 = 150 mm Rainfall on 6th and 7th day are 42 mm and 25 mm respectively. |
Total rainfall in 7 days = 150 + 42 + 25 = 217 mm Hence, Average = 217/7 = 31 mm
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