Question
Pipe A fills a tank in 8 hours, Pipe B fills it in 12
hours, and Pipe C empties it in 24 hours. If all are opened together, how long will it take to fill the tank?Solution
Net rate = 1/8 + 1/12 - 1/24 LCM = 24 1/8 = 3/24 1/12 = 2/24 -1/24 = -1/24 Net = (3+2-1)/24 = 4/24 = 1/6 Time = 6 hours
More Pipes and cisterns Questions
What value should come in the place of (?) in the following number series?
500, 789, 428, ?, 340, 965
Choose the missing term.
R, U, X, A, D,?
204, ?, 120, 83, 52, 23
6, 7, 16, 51, 208, ?
226, 171, 124, 85, 54, ?
4, 5, 11, 34, 137, ?
What will come in place of the question mark (?) in the following series?
4, 11, 32, 95, 284, 851, ?
8, ?, 29, 57, 113, 225
In each of the following series, one term is missing. Find the missing term.
7, 11, 19, 35, 67, ?
What should come in place of (?) question mark in the following number series.
5, 11, 23, 47, 95, ?
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