## 209. Three Workers.

- We, Bill, and I, - said Kayzi, - can do this job for you in 10 days, and if Bill is replaced by Alec, we can manage it in 9 days.
- And even better, - said Alec, - give me Bill as a helper, and we will do your job in 8 days.

How long would it take each worker to complete this job alone?
209. Alek can complete the work in \(14 \frac{34}{49}\) days, Bill in \(17 \frac{23}{41}\) days, and Casey in \(23 \frac{7}{31}\) days.