Question (1/28)
Three pipes A, B and C can fill a tank in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The number of hours taken by C alone to fill the tank is ?(A) 10 hours
(B) 12 hours
(C) 14 hours
(D) 16 hours
Question (2/28)
2 pipes A and B can fill a cistern in 37 1/2 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour if the pipe B is turned off after ?(A) 5 minutes
(B) 9 minutes
(C) 11 minutes
(D) 15 minutes