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?
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 :)
