If 150 litres of water is needed by per head per day find the number of days for which water in a tank 20 x 15 x 6 metre is sufficient for 4000 people
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Answer is 30days because per 4000 people need 4000 x 150= 60000. and the volume of the tank is 20 x 15 x 6=1800m³ (1m³=1000litres)
therefore 1800m³ x 1000= 1800000litres and 1800000divided by the water needed per day per person is= 180000/60000=30days
therefore 1800m³ x 1000= 1800000litres and 1800000divided by the water needed per day per person is= 180000/60000=30days
GowriKrishna3:
It is 3days
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