A and B together can complete work in 8 days. A alone starts working and leaves it after working for 6 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 answers:
A) 4
B) 8
C) 5
D) 12
E) 7
Explanation:   (A+B) one day work =1/8   now A does half of the work in 6 day so A can complete the whole work in 12 days   A’s one day work =1/12   B’s one day work=1/8 - 1/12= 1/24   B alone can complete the work in 24 days so half of the work in 12 days   Answer: Option 12
<result>D</result>
A and B together can complete work in 8 days. A alone starts working and leaves it after working for 6 days completing only half of the work. In how many days it can be completed if the remaining job is undertaken by B?