Akash and Bhuvan together can finish the work in 13 days. If after working for 5 days, Akash left the work and Chethan joined Bhuvan to finish the work in 6 more days. Find the time taken by Chethan to finish the work alone, given Bhuvan is twice as efficient as Akash.
1
\(19\frac{1}{2}\) days
2
\(17\frac{1}{2}\) days
3
\(15\frac{1}{2}\) days
4
\(13\frac{1}{2}\) days
5
\(21\frac{1}{2}\) days