Ratio And Proportion

Cost of 105 envelopes is ` 35. How many envelopes can be
purchased for ` 10?

If the cost of a dozen soaps is ` 153.60, what will be the cost of
15 such soaps?

A motorbike travels 220 km in 5 litres of petrol. How much
distance will it cover in 1.5 litres of petrol?

If the cost of 6 cans of juice is ` 210, then what will be the cost
of 4 cans of juice?

Do the ratios 15 cm to 2 m and 10 sec to 3 minutes form a
proportion?

Are 30, 40, 45 and 60 in proportion?

Are the ratios 25g : 30g and 40 kg : 48 kg in proportion?

Divide ` 60 in the ratio 1 : 2 between Kriti and Kiran.

Give two equivalent ratios of 6 : 4.

There are 45 persons working in an office. If the number of
females is 25 and the remaining are males, find the ratio of :
(a) The number of females to number of males.
(b) The number of males to number of females.

Find the ratio of 90 cm to 1.5 m.

Length and breadth of a rectangular field are 50 m and 15 m
respectively. Find the ratio of the length to the breadth of the field.