A can finish a work in 18days 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 most appropriate option:
A) 1/2
B) 1/3
C) 1/6
D) 2/5
E) 2/9
1days work of A+B = (18+9)/18*9 = 1/6   Answer is 1/6
<result>C</result>
A can finish a work in 18days 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?