Question 4.7 a & b of Fundamentals of healthcare finance by Gapenski. For (a) I got this, I am not sure whether I am on the right path

General Administration = $2,000,000/$36,500,000 = 0.05

Facilities = 5,000,000/230,000 = 21.7

Financial services = 3,000,000/50,000,000 = 0.06

(b) In allocating the hospital's overhead costs to the patient service departments, how do I go about solving this