A and B complete a job in 6 days. A alone can do the job in 18 days. If B works alone, how many days will it take to complete the job?	Choose the correct answer: A) 8 B) 9 C) 10 D) 11 E) 12
The rate of A and B is 1/6   A's rate is 1/18   B's rate is 1/6 - 1/18 = 1/9   B can complete the job in 9 days.   The answer is 9.
<result>B</result>
A and B complete a job in 6 days. A alone can do the job in 18 days. If B works alone, how many days will it take to complete the job?