12 men complete a work in 8 days. 3 days after starting the work, it was decided that the remaining work should be completed in 4 days. How many more people should be increased so that the work is completed in 4 days?
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Answer:
1 man's 1day's work =
96
1
12 man's 3 day's work =3×
8
1
=
8
3
Remaining work =
8
1−3
=
8
5
15 man's 1 day's work =
96
15
Now,
96
15
work is done by them in 1 day.
∴
8
5
work will be done by them
in
15
96
×
8
5
⇒4 days.
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