A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in:	Choose the correct choice.
A) 33/7  B) 43/7  C) 24/7  D) 19/7  E) None
If A can do a piece of work in n days, then A's 1 day's work = 1/n   (A + B + 24/7)'s 1 day's work =1/24+1/6+1/12=7/24   So, all the three together will complete the job in = 24/7 days   Answer: 24/7
<result>C</result>
A, B and C can complete a piece of work in 24, 6 and 12 days respectively. Working together, they will complete the same work in: