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Pipes and Cisterns Practice Test 2 with solutions
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© examsnet.com
Question : 4
Total: 40
A tank is connected with three pipes L, M and N. Pipe L can fill the tank in as much time taken by M and N together. Pipes L and M together can fill the tank in
9
3
4
minutes and Pipe N alone can fill the tank in 48 minutes. Find the time taken by Pipe L alone to fill the tank.
10 minutes
11
1
11
minutes
16 minutes
12
1
2
minutes
None of these
Validate
Solution:
Work done by ‘L’ alone is equal to the work done by both M and N together.
So, L = M + N
⇒ L - M + N
Work done by N in one minute =
1
48
So, L - M =
1
48
... (1)
Work done by L and M in one minute =
5
48
......(2)
Adding (1) and (2) we get,
L =
1
16
So, L alone can fill the tank in 16 minutes
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