A small village, having a population of 5000, requires 75 litres of water per head per day. The village has got an overhead tank of measurement 40 m ×25 m×15 m. For how many days will the water of this tank last?
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Solution
Volume of tank =(40)(25)(15)=15000m3=15000000l Water to population required per day =5000(75)=375000l Water tank Last for =15000000375000=40 days.