X and Y can complete a piece of work in 8 days and 12 days, respectively. If they work on alternate days, with X working on the first day, how long will it take the duo to complete the work?
9 \( \frac{1}{3} \)days
9 \( \frac{2}{3} \) days
9 \( \frac{3}{5} \) days
9 \( \frac{1}{5} \) days