A, B and C can do a work in 4 days, 8 days and 12 days respectively. In how many days can all three of them working together, complete the work?
Choose the correct choice from the following: A) 2 9/11 days B) 5 2/11 days C) 2 1/11 days D) 3 2/11 days E) 2 2/11 days
Work done by all three of them in one day = 1/4+ 1/8 + 1/12 = 11/24.   The number of days required = 24/11 = 2 2/11 days.   ANSW2 2/11 daysR:2 2/11 days
<result>E</result>
A, B and C can do a work in 4 days, 8 days and 12 days respectively. In how many days can all three of them working together, complete the work?