Ratio & Proportion

The cost of 10 tables is ₹ 7500. Find the number of tables that can be purchased with ₹ 9000.

Green paint is made by mixing blue, yellow and white paints in the ratio 2: 7: 1. How much blue paint is needed to make 64 litres of green paint?

Are 20, 25, 12, 15 in proportion?

The weight of 25 copies is 5 kg. Find the weight of 30 such copies?

Check whether the given ratios are equivalent or not. 2/7, 6/21 

There are 180 students in a class. Number of girls are 75. Find the ratio of the girls to the number of boys.

Find the ratio of the following:

(a) 56 to 63.

(b) 55 to 120.

Write True or False against the following statement: 8: 9:: 24: 27.