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NIFT PG 2020 Question Paper with solutions
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© examsnet.com
Question : 6
Total: 150
A
and
B
can do a piece of work in 30 and 36 days, respectively. They began the work together but
A
leaves after some days and
B
finished the remaining work in 25 days. After how many days did A leave?
6 days
11 days
10 days
5 days
Validate
Solution:
A's one day's work
=
1
30
and B's one day's work
=
1
36
∴
(
A
+
B
)
′
s
one day's work
=
1
30
+
1
36
=
11
180
25 day's work of
B
=
25
36
∴
Remaining work
=
1
−
25
36
=
11
36
A
and
B
complete the work
11
36
in
=
11
36
÷
11
180
=
5
days
So,
A
leaves after 5 days
© examsnet.com
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