Suppose Tefco Corp. has a value of ​$100100 million if it continues to​ operate, but has outstanding debt of ​$120120 million that is now due. If the firm declares​ bankruptcy, bankruptcy costs will equal ​$2020 ​million, and the remaining ​$8080 million will go to creditors. Instead of declaring​ bankruptcy, management proposes to exchange the​ firm's debt for a fraction of its equity in a workout. What is the minimum fraction of the​ firm's equity that management would need to offer to creditors for the workout to be​ successful?