A and B can do a piece of work in 18 and 9 days respectively. A does the work for a few days and left, then B continued for 6 days. How many days did A and B work together?
Pick one:
A) 1
B) 2
C) 3
D) 4
E) 5
A and B work together for 2days.   A 1day work 1/18   B 1day work 1/9   Let A work x days.   Then equation form is   (x/18) + ((x+6)/9) = 1   From this equation x value is 2.   ANSWER:2
<result>B</result>
A and B can do a piece of work in 18 and 9 days respectively. A does the work for a few days and left, then B continued for 6 days. How many days did A and B work together?