A mixture contains alcohol and water in the ratio 4 : 3. If 5 liters of water is added to the mixture, the ratio becomes 4 : 5. Find the quantity of alcohol in the mixture.

A mixture contains milk and water in the ratio 5 : 1. On adding 5 liters of water, the ratio becomes 5 : 2. The quantity of milk is:

Three containers have their volumes in the ratio 3:4:5. They are full of mixtures of milk and water in ratios (4:1), (3:1) and (5:2) respectively. The contents of all these three containers are poured into a fourth container. The ratio of milk and water in the fourth container is:

Two vessels A and B contain milk and water mixed in the ratio 4 : 3 and 2 : 3 respectively. In what ratio must these mixtures be mixed to form a new mixture containing half milk and half water?

A and B are two mixtures of gold and copper in ratios 7:2 and 7:11. If equal quantities of these mixtures are melted to form a third mixture C, find the ratio of gold and copper in C.

The ratio of petrol and kerosene in two mixtures is 4:3 and 2:3. How many litres of the second mixture should be mixed with 14 litres of the first mixture so that the final ratio is 1:1?

A container contains 40 litres of milk. From this container, 4 litres of milk was taken out and replaced by water. This process was repeated further two times. How much milk is now contained in the container?