Question

A person needs to fill 20 water jugs with a water hose. Filling the first two jugs has taken three minutes. How long to finish filling the remaining jugs?

Answer 1

3 minutes ÷ 2 jugs = 1.5 minutes per jug.

1.5 minutes per jug × 18 jugs = 27 minutes.

(Not 20 jugs since we have already filled 2. Making it 18 jugs.)