A can do a piece of work in 4 hours, B and C can do it in 3 hours. A and C can do it in 2 hours. How long will B alone take to do it?
A can do a piece of work in 4 hours, B and C can do it in 3 hours. A and C can do it in 2 hours. How long will B alone take to do it?
[A]8 hours
[B]24 hours
[C]10 hours
[D]12 hours
12 hours
A’s one hour’s work
(B + C)’s one hour’s work
(A + C)’s one hour’s work
∴ C’s one hour’s work
B’s one hour’s work
Hence B alone can do the work in 12 hours, so option [D] is correct answer.
