A and B can do a piece of work in 8 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?	Select the correct option
A) 7.39 days	B) 7.78 days	C) 7.34 days	D) 7.38 days	E) 3.38 days
A + B = 1/8   B + C = 1/12   C + A = 1/16   -------------------------------   2(A + B +C) = 1/8 + 1/12 + 1/16 = 13/48   A + B +C = 13/96   96/13 = 7.38 days   Answer: 7.38 days
<result>D</result>
A and B can do a piece of work in 8 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?