A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 8 days before the completion of the work. In how many days was the work completed?	Choose the correct choice from the following answers: A) 12 days B) 16 days C) 18 days D) 11 days E) 38 days
One day work of A, B and C = 1/24 + 1/30 + 1/40 = 1/10 Work done by A and B together in the last 8 days = 8*(1/24 + 1/30) = 3/5   Remaining work = 2/5   The number of days required for this initial work = 4 days.   The total number of days required = 8 + 4= 
<gadget id="calculator">8 + 4</gadget>
<output>12</output>
12 days.   12 daysnswer: 12 days
<result>A</result>
A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 8 days before the completion of the work. In how many days was the work completed?