A can do a piece of work in 12 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?  Choices:
A) 18 B) 77 C) 66 D) 55 E) 12
8/12 + 6/x = 1   X = 18 days   18nswer:18
<result>A</result>
A can do a piece of work in 12 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?