A and B can complete a piece of work in 18 days and 40 days, respectively. If they work on alternate days, starting with B on first day, then in how many days will the work be completed?
1
\(25 \frac{3}{20}\)
2
\(25 \frac{1}{10}\)
3
\(26 \frac{1}{5}\)
4
\(24 \frac{24}{29}\)