Answer the Following Questions Using the Information Below

Multiple Choice

Answer the following questions using the information below:
O'Grady's Cycle Repairs shop has a variable demand.Historically,its demand has ranged from 20 to 25 bicycle repairs per day with an average of 20.Evan,the mechanic,works eight hours a day,five days a week.Each order is one bicycle repair and each bicycle repair takes 20 minutes.
-What is the average waiting time,in minutes?

A) 4.4
B) 1.6
C) 28.2
D) 50.0