# 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 Show Answer 12 hours A’s one hour’s work (B + ..