A can finish a work in 12days and B can do the same work in half the time taken by A. Then, working together what part of the same work they can finish in a day?	Choose the correct option.
A) 1/2
B) 1/3
C) 2/5
D) 1/4
E) 3/7
1days work of A+B = (12+6)/12*6 = 1/4   Answer is 1/4
<result>D</result>
A can finish a work in 12days and B can do the same work in half the time taken by A. Then, working together what part of the same work they can finish in a day?