The amount of groundwater taken out and the amount of water that goes into the ground should be balanced.
If the amount of water extracted from the ground is equal to the amount of water which gets naturally infiltrated, will the case of groundwater depletion arise?
A vessel whose capacity is 80 litres is filled with milk and water. Out of this, 70% of milk and 30% of water is taken out. It is then found that the vessel is vacated by 55%. Find the amount of water taken initially.