Question
An inlet pipe fills a water tank in 50 minutes and an
outlet pipe empties the tank in 75 minutes. How much time will both take to fill half the tank when opened together?Solution
ATQ,
Let total tank capacity be 150 litres (LCM of 50 and 75)
Inlet efficiency = 150 ÷ 50 = 3 litres/minute
Outlet efficiency = 150 ÷ 75 = -2 litres/minute
Required time = (0.5 × 150) ÷ (3 - 2) = 75 minutes
More Pipes and cisterns Questions
- Find the wrong number, in the given number series.
320, 160, 80, 50, 20, 10 Find the wrong number in given number series.
2116, 2146, 2190, 2218, 2260, 2306
12, 14, 18, 26, 38, 64
Find the wrong number in the given number series.
263, 133, 201, 505, 1771, 7974
Find the wrong number in the given number series.
9, 17, 33, 61, 118, 231
25, 32, 47, 77, 126, 198
29, 36, 59, 74, 105, 144
11, 92, 156, 205, 241, 266
39, 43, 59, 95, 159, 281
A-5,  A,  35,  52, 78, 115
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