A and B can do a work in 8 days, B and C can do the same work in 12 days. A,B and C together can finish it in 6 days. A and C together will do it in how many days? Choose the correct choice: A) 7 B) 6 C) 5 D) 8 E) 9
Let the total units of work be 48.   Units of work completed by A and B in one day = 6.   Units of work completed by B and C in one day = 4   Units of work completed by A, B, and C in one day = 8.   From the above information we get the work completed by A and C in one day is 6 units.   Therefore, the number of days taken by A and C to complete the whole work = 48/6= 
<gadget id="calculator">48/6</gadget>
<output>8</output>
8 days.   ANSWER:8
<result>D</result>
A and B can do a work in 8 days, B and C can do the same work in 12 days. A,B and C together can finish it in 6 days. A and C together will do it in how many days?