A, B and C can do a work in 6 days, 8 days and 12 days respectively. In how many days can all three of them working together, complete the work?
Choose the most appropriate option
A) 2 2/3  B) 2 2/9  C) 2 2/8  D) 2 2/5  E) 2 2/1
Work done by all three of them in one day = 1/6 + 1/8 + 1/12 = 3/8.   The number of days required = 8/3 = 2 2/3 days.   2 2/3nswer:2 2/3
<result>A</result>
A, B and C can do a work in 6 days, 8 days and 12 days respectively. In how many days can all three of them working together, complete the work?