A dishonest milk man professes to sell milk at some cost price. But he mixes it with water and thereby gains 40%. What is the percentage of water in the mixture?

A dishonest milkman professes to sell his milk at cost price but he mixes it with water and there by gains 25%. The percentage of water in the mixture is

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?

A shopkeeper has 80 litres of milk. He makes a profit of 25% by selling 1 litre of milk at Rs.15. How much water should he mix in the milk so as to increase his profit to 30% if he plans to sell the milk-water mixture at Rs. 15 per litre??

In what ratio must water be mixed with milk to gain 25% by selling the mixture at cost price?*1:11:61:45:1

A milk vendor has 2 cans of milk. The first contains 35% water and the rest milk. The second contains 65% water. How much milk should he mix from each of the container so as to get 64 liter of milk. Such that the ratio of water to milk is 3:7?