A can finish a work in 18 days, and B can do the same work in half the time taken by A. Working together, what fraction of the work can they finish in one day?
A
1/5
B
1/6
C
1/7
D
1/8
Correct Option:
B
Explanation
A takes 18 days, while B takes half as long, 9 days. Their combined one-day work is:
1/18 + 1/9 = 3/18 = 1/6.
