$3$ Additional Algo $5-6$ Flow$-$Dependent Processing Times

Two$-$types of patients come to the physical$-$therapy clinic for treatment. New patients arrive at a rate of $12$ patients per hour and spend

$15$ minutes in registration and $20$ minutes with a therapist. Repeat patients arrive at a rate of $20$ patients per hour and spend $5$ minutes

in registration and $5$ minutes with a therapist. The staff consists of $1$ registration employee and $4$ therapists.

Answer is complete but not entirely correct.

Instruction: Round your answer to one decimal place.

How many new patients will be served each hour?