# How Long did the Work Last? If

A can complete a work in 10 days, B in 12 days, and C in 15 days. All of them began the work together, but A had to leave the work after 2 days of the start and B 3 days before the completion of the work. How long did the work last?

- 6 days
- 5 days
- 7 days
- 9 days