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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Solution
Given:
⇒l×b×h=20×15×6
⇒Capacity of tank =l×b×h=(20×15×6)m3 =1800m3 =1800000 litre
⇒Consumption of water in 1 day =4000×150 litres =600000 litres
⇒Water of this tank will last for =1800000600000 =3 days