A vessel has 400 litres of pure milk. 40 litres of milk is removed from the vessel and replaced by water. 40 litres of the mixture thus formed is replaced by water. This procedure is repeated once again. Find the percentage of milk in the resultant solution.

When one litre of water is added to a mixture of milk and water, the new mixture contains 25% of milk. When one litre of milk is added to the new mixture, then the resulting mixture contains 40% milk. What is the percentage of milk in the original mixture?

There are two vessels A and B. Vessel A contains 25 liters of pure milk and vessel B contains 15 liters of pure water. Five liters of milk is taken out from vessel A and poured into vessel B. Then, 5 liters of mixture is taken out from vessel B and poured into vessel A. What is the ratio of the quantity of pure milk in vessel A to the quantity of water in vessel B

A vessel contains a mixture of milk and water in the respective ratio of 5 : 1. 18 liters of mixture was taken out and replaced with the same quantity of milk so that the resultant ratio between the quantities of milk and water in the mixture becomes 7 : 1 respectively. If 28 liters of the mixture is again taken out from the vessel, what is the quantity (in liters) of water that should be added to make the quantity of milk 70% in the mixture

A milkman had 20 litres of pure milk. He removed some milk and added an equal amount of water. He repeated the process again. Now, the milk was only 64% pure. Find the amount of milk that he removed initially.Choices:- 4 litres 6 litres 6.6 litres 5 litres

A mixture contains 40% water and rest milk. 20 litres from the mixture is placed with same quantity of milk. If the ratio of quantity of milk to that of water in the resultant mixture is 7:4 then find the initial quantity of mixture.