Question

taps X,Y,Z can fill a cistern in 6 hours ,8 hours , 12 hours respectively. taps o can empty the cistern in 4 hours . the 4 taps X Y Z and o are allowed to run for 3hours after which tap o is closed. how long will it take for the 3taps to fill the remaining cistern​

Answer 1

Answer:

please mark as me brainlist because I need your help

please mark as me brainlist because I need your help