Q. A hospital has 30 labour rooms, 15 combinations labour also delivery rooms, 3 delivery rooms, also 1 special delivery room reserved for complicated births. All rooms operate around clock. Time spent in labour rooms varies from hours to days, with an average of about a day. Average uncomplicated delivery requires about one hour in a delivery room.

During a three day period, 109 healthy babies were born. 60 babies were born in separate labour also delivery rooms, 45 were born in combined labour also delivery rooms, also only 4 babies required a labour room also complicated delivery room. Which had greatest utilization rate?