Question

Taps A, B and C together can fill a cistern in 15 hours. The three pipes are open together for 5 hours after which A is closed. B and C together take 16 more hours to completely fill the tank How much
time will A alone take to fill the tank.
40 hours
60 hours
55 hours
30 hours​

Answer 1

Step-by-step explanation:

55 is the right answer of this question