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AFCAT II 24 Aug 2019 Paper
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© examsnet.com
Question : 24
Total: 100
A can do a job in 20 days. He works for 5 days and finishes1/4 of the total work. Then B comes and finishes theremaining work in 15 days. How many days A and B togetherwill take to finish the job?
17.5 days
15 days
10 days
None of these
Validate
Solution:
👈: Video Solution
Work done by A in 5 days.
5
20
=
1
4
work
Remaining work
=
1
−
1
4
=
3
4
work
Now, time taken by B to finish
3.4
work
=
15
days
Time taken by B to finish full work
=
15
×
4
3
=
20
days
Time Require to finish whole work, when A and B worktogether
=
20
×
20
20
+
20
=
10
days
© examsnet.com
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