B Can Do The Work Alone In:
Answer: (2) 6 days
Let the A can finish a piece of work = X days, B can finish the same work = X/2 days
And C can finish same piece of work = X/3 days.
A, B & C can together work in a day = (1/X + 2/X + 3/X) = 1/2
6/X = 1/2
X = 12
Then, B can work complete = 12/2 = 6 days.
Hence the answer is (2) 6 days.