A can do a piece of work in 15 days. A does the work for 5 days only and leaves the job. B does the remaining work in 6 days.In how many days B alone can do the work? Choose the correct choice from the following answers.
A) 5days
B) 7 days
C) 12 days
D) 9 days
E) 10 days
Explanation:   A’s 5 day work = 5*1/15=1/3   Remaining work = 1-1/3=2/3   B completes 2/3 work in 6 days   B alone can do in x days   2/3*x=6   X=9 days   Answer: Option 9 days
<result>D</result>
A can do a piece of work in 15 days. A does the work for 5 days only and leaves the job. B does the remaining work in 6 days.In how many days B alone can do the work?