A and B can do a piece of work in 4 days. B and C can do it in 12 days and A and C in 16 days. Working together they will complete the work in how many days?	Options.
A) 4.05 days	B) 5.05 days	C) 14.76 days	D) 8.05 days	E) 15.05 days
A + 5.05 days = 1/4   5.05 days + C = 1/12   C + A = 1/16   -------------------------------   2(A + 5.05 days +C) = 1/4 + 1/12 + 1/16 = 19/48   A + 5.05 days +C = 19/96   96/19 = 5.05 days   ANSWER:5.05 days
<result>B</result>
A and B can do a piece of work in 4 days. B and C can do it in 12 days and A and C in 16 days. Working together they will complete the work in how many days?