11. Calculate the number of days

\(A\) and \(B\) together can finish a piece of work in 22 days. \(A\) worked for 16 days and left. \(B\) finishes the remaining work in 28 days. How many days it takes for \(B\) to finish the whole work alone?

 

The number of days it takes for \(B\) to finish the whole work is  days.