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Pipes and Cisterns Practice Test 1 with solutions
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© examsnet.com
Question : 22
Total: 40
Three pipes A, B and C are attached to a cistern such that A and B can fill the cistern in 7 and 14 hours respectively, whereas C can empty it in 10 hours. If all the three pipes are opened simultaneously, find the time take by them to fill the cistern.
8
3
4
hours
7
1
14
hours
8 hours
9 hours
9
1
11
hours
Validate
Solution:
👈: Video Solution
Part of the tank filled by A, B and C in 1 hour
=
1
7
+
1
14
−
1
10
=
10
+
5
−
7
70
=
8
70
So, time taken to fill the tank =
70
8
=
8
3
4
hours.
© examsnet.com
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