Question

Solve the following.

If a certain quantity of rice can serve for 8 men for 20 days at a cost of Rs. 480, find the cost of rice required for 12 men for 15 days.

Answer 1

Let x be the cost of rice required for 12 men for 15 days.

Cost of rice increases when the number of days increase.

This is direct proportion.

Cost of rice increases when the number of men increase.

This is direct proportion.

The detailed proportions are:

Men	Days	Cost
8	20	480
12	15	x

Thus, the cost of rice required for 12 men for 15 days is Rs.540.