2.A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :
A. 4 days
B. 6 days
C. 8 days
D. 12 days
Answer:
Option : C
(A + B + C)'s 1 day's work =
|
1
|
6
|
(A + B)'s 1 day's work =
|
1
|
8
|
(B + C)'s 1 day's work =
|
1
|
12
|
(A + C)'s 1 day's work =
|
|
2 x
|
1
|
|
-
|
|
1
|
+
|
1
|
|
6
|
8
|
12
|
So, A and C together will do the work in 8 days.
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