The dimensions of an overhead water tank is 30m x 40m x 20m. The tank supplies water to a village which has a population of 4000 people. If each person requires 60 litres of water in a day for washing, cleaning and drinking purposes, find the number of days the water in the tank will last.
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A village, having a population of 4000, requires 150 litres of water per head per day. It has a tank measuring 20 m ×15 m ×6 m. For how many days will the water of this tank last?
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Given:
⇒l×b×h=20×15×6
⇒Capacity of tank =l×b×h=(20×15×6)m
3
=1800m
3
=1800000 litre
⇒Consumption of water in 1 day =4000×150 litres
=600000 litres
⇒Water of this tank will last for =
600000
1800000
=3 days
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