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 correct choice from the following answers
A) 2 2/3 days
B) 2 8/3 days
C) 2 23/3 days
D) 8 2/3 days
E) 3 2/3 days
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 2/3 daysnswer: 2 2/3 days
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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?