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SSC CGL Tier 2 Exam 21 Sep 2014 Paper
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© examsnet.com
Question : 59
Total: 100
A, B and C can do a job in 6 days, 12 days and 15 days respectively. After
1
8
of the work is completed, C leaves the job. Rest of the work is done by A and B together. Time taken to finish the work is
5
5
6
days
5
1
4
days
3
1
2
days
3
3
4
days
Validate
Solution:
(3) Remaining work
=
1
−
1
8
=
7
8
(A + B)’s 1 day’s work
=
1
6
+
1
12
=
2
+
1
12
=
3
12
=
1
4
∴ Time taken in doing
7
8
part of work
=
7
8
×
4
=
7
2
=
3
1
2
days
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