A village with a population of 400 requires 150 l water per head per day. It has a tank measuring 20 m x 15 m x 6 m If the tank is full then how many days will the water last?
A
20 days
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B
18 days
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C
10 days
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D
30 days
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Solution
The correct option is D 30 days Daily requirement =400 x 150 It =60000 It =60m3 Number of days =20×15×660=30