Free Study Material For RRB Examination: Mathematics (Pipe and Cisterns)
Free Study Material For RRB Examination
Subject : Mathematics (Pipe and Cisterns)
1. A pump can fill a tank with water in 2 hours. Because of a leak, it took hours to fill the tank. The leak can drain all the water of the tank in:
(a) 43 hrs
(b) 9 hrs
(c) 10 hrs
(d) 14 hrs
2. Two taps A and B can fill a tank in 5 hours and 20 hours respectively. If both the taps are open then due to a leakage, it took 30 minutes more to fill the tank. If the tank is full, how long will it take for the leakage alone to empty the tank?
(a) 44 hrs
(b) 12 hrs
(c) 18 hrs
(d) 36 hrs
3. Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A to fill the cistern separately?
(a) 10 hr
(b) 4 hrs
(c) 6 hrs
(d) 8 hrs.
4. One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:
(a) 92 min
(b) 112 min
(c) 144 min
(d) 192 min
5. A tank is filled in 5 hours by three pipes A, B and C. The pipe C is twice as fast as B and B is twice as fast as A. How much time will pipe A alone take to fill the tank?
(a) 22 hrs
(b) 27 hrs
(c) 35 hrs
(d) cannot be determined