Question

A pond in a field holds 120000 litres of water. It costs Rs 18000 to make such a pond. How many ponds will be required to store 480000 litres of water, and what would be the expense?

Answer 1

Capacity of 1 pond = 1,20,000 litres 

Total quantity of water = 4,80,000 litres 

∴ Number of ponds required

Amount required to make 1 pond = Rs 18,000 

∴ Amount required to make 4 ponds = Amount required to make 1 pond x 4 

= 18,000 x 4 = Rs 72,000

∴ The number of ponds required to store 4,80,000 litres of water is 4, and the expense incurred in making the ponds is Rs 72,000.