Question 8
A small village, having a population of 5000, required 75 L of water per head per day. The village has got an overhead tank of measurement 40m×25m×15m. For how many days will the water of this last?
Given, total population of the small village = 5000
Water required per head per day = 75 L
Volume of the water required for the small village per day =Total population × Water required per head per day
=5000×75=375000 L
=3750001000m3=375 L [∵1 m3=1000 L]
Total capacity of water in the overhead tank = Volume of the overhead tank
=40×25×15=15000 m3
∴ Number of days =Total capacity of water in overhead tankVolume of water required for a small village per day
=15000375=40 days
Hence, the water of this tank will last for 40 days.