A dentist’s office has three types of workers: dentists, nurses, and receptionists. On average a dentist sees each patient for 45 minutes, the nurses spend an hour with each patient, and the receptionist spends 10 minutes with each patient. Suppose 6 patients visit the dentist’s office per hour. What is the smallest number of dentists, nurses and receptionist required to serve demand?
5 dentists, 6 nurses and 1 receptionist
6 dentists, 5 nurses and 2 receptionist
1 dentists, 1 nurses and 1 receptionist
4 dentists, 6 nurses and 1 receptionist