Ratio & Proportion Mock Tests

If a : b = 3 : 4 and b : c = 8 : 9, then a : c is:

A mixture of 60 liters contains milk and water in the ratio 2 : 1. How much water must be added to make the ratio 1 : 2?

The ratio of ages of A and B is 4:7 respectively. After 6 years, the ratio of their ages will be 7:10. Find the present age of A.

Two numbers are in the ratio 3 : 4. If 5 is subtracted from each, the new ratio becomes 4 : 5. Find the numbers.

Two numbers are in the ratio 3 : 4. If each is increased by 4, the ratio becomes 4 : 5. The numbers are:

If the ratio of ages of A and B is 3:5 and the sum of their ages is 40 years, what will be the ratio of their ages after 5 years?

Two numbers are in the ratio 3 : 5. If 8 is added to each, the new ratio becomes 2 : 3. What are the numbers?

In a mixture of 63 litres, the ratio of milk to water is 5 : 4. How much more water should be added so that the ratio becomes 4 : 5?