A can do a piece of work in 6 days and B can do it in 9 days.how long will they take to complete the same work together?l
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Answer:
Given,
A can do a work in = 6 days
A’s, 1 day work =
6
1
B can do a work in = 8 days
B’s, 1 day work =
8
1
Both (A+B)’s 1 day work =
6
1
+
8
1
=
24
4+3
=
24
7
Both (A+B)’s 2 day work =2×
24
7
=
12
7
So, the remaining work =1−
12
7
=
12
12−7
=
12
5
Now,
It is given that,
A can do a work in 6 days
A can do
12
5
work in =6×
12
5
days
=
2
5
days
=2
2
1
days
∴A can finish the work in 2
2
1
days.
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