Question
Two pipes, A and B, can independently fill the tank in
15 minutes and 20 minutes respectively, while pipe C can empty 7 gallons from the tank in 2 minutes. If all three pipes are operated simultaneously, and they manage to fill the tank in 12 minutes, what is the tank's capacity?Solution
Taking LCM of 15, 20 and 12 = 60 Efficiency of A = 4 Efficiency of B = 3 Efficiency of (A+B-C) = 5 Efficiency of C = (4 + 3) – 5 = -2 Pipe C empty the tank in = 60/2 = 30 min Capacity of the tank = 30 × (7/2) = 105 gallons
More Pipes and cisterns Questions
4178, 2153, 928, 303, 78, 55
12, 13, 21, 44, 116.5, 340.5
Find the wrong number in the given number series.
15, 195, 575, 1155, 1935, 2915
Find the wrong number in given number series.
2158, 2183, 2283, 2508, 3083, 3533
33 34 37 42 48 58
Find the wrong number in the given number series.
17, 36, 73, 134, 220, 352
2, 6, 14, 30, 134, 614
Find the wrong number in the given number series.
334, 301, 271, 251, 239, 233
1, 4, 20, 126, 1026, 10170
12, 18, 40, 90, 270, 945
