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? Choose the correct choice:
A) 18 days	B) 12 days	C) 24 days	D) 10 days	E) 15 days
Explanation:   8/12 + 6/x = 1   X = 18 days   18 daysnswer: 18 days
<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?