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RRB Paramedical Staff Nurse Model Paper 3
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© examsnet.com
Question : 47
Total: 100
A tap can fill a cistern in 8 h and another tap can empty it in 16 h. If both the taps are open, the time in hours) taken to fill the tank will be
8
10
16
24
Validate
Solution:
According to the question.
Part of the cistern filled in
1
h
=
1
8
Part of the cistern emptied in
1
h
=
1
16
When both the taps are opened simultaneously, part of the cistern filled in
1
h
=
1
8
−
1
16
=
2
−
1
16
=
1
16
Hence, the cistern will be filled in
16
h
.
© examsnet.com
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