A dishonest milkman professes to sell his milk at cost price but he mixes it with water and thereby gains 40%. The percentage of water in the mixture is:

A milk vendor has two cans of milk. The first contains 30% water and the rest milk. The second contains 60% water. How much milk should he mix from each of the containers so as to get 18 litres of milk such that the ratio of milk to water is 3 : 2?

A can contains a mixture of two liquids X and Y in the ratio 4 : 5. When 9 litres of mixture are drawn off and the can is filled with Y, the ratio of X and Y becomes 4 : 9. How many litres of liquid X was contained by the can initially?

A vessel is filled with liquid, 4 parts of which are water and 6 parts syrup. How much of the mixture must be drawn off and replaced with water so that the mixture may be half water and half syrup?

Tea worth Rs. 140 per kg and Rs. 170 per kg are mixed with a third variety in the ratio 1 : 2 : 1. If the mixture is worth Rs. 153 per kg, the price of the third variety per kg will be:

In what ratio must a grocer mix two varieties of flour costing Rs. 25 and Rs.30 per kg respectively so as to get a mixture worth Rs.27 per kg?

In what ratio should water and an 70% alcohol solution be mixed to obtain a 50% alcohol solution

Vessel A has 20 litres of a mixture of milk and water having 75% milk. Vessel B has x litres of a mixture of milk and water having 50% milk. The contents of the vessels are mixed to form a mixture having 60% milk. Find the volume of mixture in vessel B.

A container with capacity 25 litre is 60% filled with a solution of milk and water. Milk is 80% of the solution. If 10 litre water is added to the solution, what amount of the new mixture will be milk?

Suresh purchases five kilograms of sugar costing Rs.15 per kg and ten kilograms of sugar costing Rs.12 per kg. He mixes both the varieties of sugar. The mixture is sold at 20% loss. Find the selling price of the mixture (in Rs./kg).

Ramesh is a retailer who purchases two varieties of coffee. In what ratio must he mix the two kinds of coffee which cost Rs.100 per kg and Rs.120 per kg such that the resultant mixture costs Rs.108 per kg?

In a class of 100 students, there are 30 boys and 70 girls. In a test, the average score of boys was 85 and that of girls was 95. What was the average mark of the entire class?

In what ratio must two varieties of Tur dal costing Rs.35 per kg and Rs.45 per kg be mixed,so that by selling the mixture at Rs.45 per kg the shopkeeper would make  25% profit?

A vessel has 200 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.

A vessel contains 70% milk in a 100 litre mixture of milk and water, . How much water should be added to the solution to dilute the milk content to 60%.

Raju has 2 vessels containing a mixture of milk and water. The ratios of milk and water are 3 : 10 and 4 : 5 in the first and second vessels respectively. In what ratio should he mix them so that the resulting mixture contains milk and water in the ratio 79 : 155?

How many kilograms of rice costing Rs.19 per kg should be added with 9 kg of rice costing Rs.21 per kg, so that the shopkeeper incurs a cost of Rs.20.2 on the mixture?

A bag contains a total of 60 coins in the denominations of 50 p and Rs.1. Find the number of 50 p coins in the bag if the total value of the coins is 50.

Consider that you mix 5 litres of 70% alcohol with 10 litres of 40% alcohol. Find the concentration of the resulting solution.

The cost of Type A wheat is Rs. 45 per kg and Type B wheat is Rs. 70 per kg. If both Type A and Type B are mixed in the ratio of  3 : 2, then the price per kg of the mixed variety of wheat is:

A milkman has 25 litres of pure milk. He adds water to the milk and sells the resulting mixture at cost price, still managing to make a profit of 60%.Find the percentage of water in the resulting solution.

A shopkeeper mixes three varieties of rice priced at Rs.100 per kg, Rs.120 per kg and Rs.180 per kg. He sells the mixture at Rs.140 per kg. What would be the proportion of the three varieties?

There are 2 vessels containing copper and zinc metals in the ratio 4 : 5 and 7 : 11 respectively. If equal weights of the two are melted together to form a third alloy, find the ratio of the weights of copper and zinc in the third alloy named C.

Two solutions of hydrochloric acid are mixed in the ratio 2 : 3. The concentrations of hydrochloric acid in the first and second solutions are 30% and 40% respectively. What would be the concentration of hydrochloric acid in the final solution?

A container has 40 litres milk solution with 60% milk content in it. How much water should be added to the solution in order to reverse the content of milk and water?