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Pipes and Cisterns Practice Test 1 with solutions
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© examsnet.com
Question : 37
Total: 40
Pipe A and B can fill tank in 43 and 41 minutes respectively. Both the pipes are opened simultaneously but pipe B is closed after 19 minutes and the remaining portion of the tank is filled by Pipe A alone. Find the time taken by Pipe A in order to fill the remaining portion of the tank after Pipe B was closed.
7
1
41
minutes
169
43
minutes
4
3
31
minutes
5
6
43
minutes
4 minutes
Validate
Solution:
👈: Video Solution
Part of tank filled by A and B in 1 minute
=
1
43
+
/
41
=
41
+
43
1763
=
84
1763
Part of tank filled by A and B in 19 minutes
=
84
1763
×
19
=
1596
1763
Remaining portion =
1
−
1596
1763
=
167
1763
Time taken by Pipe A to fill the tank = 43 minutes
Time taken by
167
1763
th part of the tank to be filled =
(
43
×
167
1763
)
minutes
=
167
41
=
4
3
41
minutes
© examsnet.com
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