A car can travel 240km in 15 litres of petrol. How much distance will it travel in 25 litres of petrol?

In a floral design made from tiles each of dimensions 40cm by 60cm (See Fig. 8.7), find the ratios of:

a) the perimeter of shaded portion to the perimeter of the whole design.

b) the area of the shaded portion to the area of the unshaded portion.

In Fig. 8.8, what is the ratio of the areas of

a) shaded portion I to shaded portion II?

b) shaded portion II to shaded portion III?

c) shaded portions I and II taken together and shaded portion III?

Bachhu Manjhi earns Rs 24000 in 8 months. At this rate,

a) how much does he earn in one year?

b) in how many months does he earn Rs 42000?

The yield of wheat from 8 hectares of land is 360 quintals. Find the number of hectares of land required for a yield of 540 quintals?