Question

A swimming pool can be filled in 4 hours by 8 pumps of the same type. how many similar pumps would be required to fill this pool in 2⅔ hours​

Answer 1

I hope it helps although it can be wrong

Answer 2

Answer:

Let the volume of the pool = 16 units

then Efficiency of the pump

$= \frac{16}{8 \times 4} \\ = \frac{1}{2}$

pumps required

$= \frac{16}{ \frac{1}{2} \times \frac{8}{3} } = pumps \: required \\ = \frac{16 \times 6}{8} = 12$