A can do a piece of work in 15 days. When he had worked for 2 days B joins him. If the complete work was finished in 8 days. In how many days B alone can finish the work?  Select
A) 11 6/7days
B) 12 6/7days
C) 13 6/7days
D) 14 6/7days
E) 15 6/7days
8/15 + 6/x = 1   X = 12 6/7days   ANSWER:12 6/7days
<result>B</result>
A can do a piece of work in 15 days. When he had worked for 2 days B joins him. If the complete work was finished in 8 days. In how many days B alone can finish the work?