A can do a certain work in 80 days. B is 66(⅔)% less efficient than A and C is 200% more efficient than B. All the three started the work together. If B and C left the work 5 days and 2 days before the completion of the work, respectively, then in how many days was the entire work completed?
1
\(55\frac{3}{7}\) days
2
\(35\frac{6}{7}\) days
3
\(47\frac{5}{7}\) days
4
\(23\frac{6}{7}\) days