A village having a population of 8000 requires 200 litres of water per head per day. It has a tank measuring 40 m `xx` 30 m `xx` 12 m. The water of this tank will last for
Daily need of water = 8000× 200 Amount of water in the tank = 40m× 30 m× 12 m. Number of days = Amount of water in the tank/daily need of water = (40× 30× 12× 1000)/(8000× 200) (1litre = 1000m³) Number of days = 9 days
