A and B together can complete work in 5 days. A alone starts working and leaves it after working for 3 days completing only half of the work. In how many days it can be completed if the remaining job is undertaken by B?	Choose the correct choice from the following
A) 4  B) 8  C) 15  D) 6  E) 7
Explanation:   (A+B) one day work =1/5   now A does half of the work in 3 days so A can complete the whole work in 6 days   A’s one day work =1/6   B’s one day work=1/5 - 1/6= 1/30   B alone can complete the work in 30 days so half of the work in 15 days   Answer: Option 15
<result>C</result>
A and B together can complete work in 5 days. A alone starts working and leaves it after working for 3 days completing only half of the work. In how many days it can be completed if the remaining job is undertaken by B?