A can do a work in 16 days. A and B can do it in 8 days. How many days can B alone can do the work?
Choose the correct choice.
A) 1/16
B) 32
C) 16
D) 8
E) 1/8
Ans is:C   A's 1 day's work =1/16   (A + B)'s 1 day's work =1/8   B's 1 day's work =1/8-1/16=1/16   Therefore whole work can be done by B in 16 days. Ans:16
<result>C</result>
A can do a work in 16 days. A and B can do it in 8 days. How many days can B alone can do the work?