11) X and Y can do a job in 12 days. After working
for two days, they are assisted by Z, who works
at the same rate as X. The remaining work gets
completed in 25/4days. In how many days will Y
alone do the work?
Answers
Answered by
0
Explanation:
Work done by A in 1 day =
9
1
Work done by B in 1 day =
18
1
Work done by B in last 3 days =
18
1
×3=
6
1
Remaining work=1−
6
1
=
6
5
Work done by A and B in 1 day =
9
1
+
18
1
=
18
3
=
6
1
Hence no. of days in which A and B worked together is =
6
1
6
5
=5 days
Then total time to complete the work =3+5=8 days.
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