A can complete \(33\frac{1}{3}\)% of a work in 5 days and B can complete 40% of the same work in 10 days. They work together for 5 days and then B left the work. A alone will complete the remaining work in:
1
\(7\frac{1}{2} \) days
2
5 days
3
7 days
4
\(5\frac{1}{2} \) days