Question

two taps can fill a tub in 90 minutes and 45 minutes respectively a drain can empty it in 60 minutes if all the three are kept open simultaneously money for 30 minutes and the the drain is closed how long will it take for the tub to be full
Solve in solution ​

Answer 1

Answer:

225min

Step-by-step explanation:

because

90+30+60+45min

total 225 minutes