Question

If 12 pumps can fill a reservior in 10 days, the number of additional pumps needed to fill it in 8days is

Answer 1

Answer:

More the number of pumps = less the time needed to fill the reservoir

So, it is an inverse proportion

Let the number of pumps be 'a'

12 × 10 = 8a

120/8 = a

15 = a

So, 15 pipes are required to fill the reservoir in 8 days

Answer 2

1. 15 days pipes required to fill