A and B together can complete work in 6 days. A alone starts working and leaves it after working for 4 days completing only half of the work. In how many days it can be completed if the remaining job is undertaken by B? Answers
A) 4 B) 12 C) 5 D) 6 E) 7
Explanation:   (A+12) one day work =1/6   now A does half of the work in 4 days so A can complete the whole work in 8 days   A’s one day work =1/8   12’s one day work=1/6 - 1/8= 2/48= 1/24   12 alone can complete the work in 24 days so half of the work in 12 days   Answer: Option 12
<result>B</result>
A and B together can complete work in 6 days. A alone starts working and leaves it after working for 4 days completing only half of the work. In how many days it can be completed if the remaining job is undertaken by B?