Akkiryno2713 Akkiryno

CAT Preparation Community 6y ago

Two pipes A and B can fill a tánk in 24 hours and 120 hours respectively. Harihar opéned the pipes A and B to fill an empty tank and some times later he closed the taps A and B, when the tank was supposed to be full. After that it was found that the tank was emptied in 2.5 hours because an outlet pipe C' connected to the tank was open from the beginning. I Harihar closed the pipeC instead of closing pipes A and Bthe remaining tank would have been filled in : (a) 2 hours (c) 6 hours (b) 8 hours (d) 4 hours