Question

One pump can fill a swimming pool in 72 hours. A second pump can fill the same pool in 60 hours. If

both pumps are used at the same time, how long will it take to fill the pool?

Answer 1

i’m not sure but i think 66 hours because both pumps must fill half of the pool which would split the timing for each which would make pump 1 take 36 hours to fill half and pump two take 30 hours to fill the rest. when you add these hours it equals 66. i hope i helped :)