Question

One hose can fill a swimming pool in 12 hours a different larger hose can fill the same pool and half the time if both houses are used together how many hours will it take to fill the pool

Answer 1

if we use both hoses, we can fill the swimming pool in 4 hours

Explanation:

if 1/12 + 1/6 then we have 3/12 and if we divide this fraction we will have 1/4

it means a pool can be filled completely in 4 hours