a ) ) The average time a car is in the system = 5 = 5 minutes ( ( round your response to two decimal

a$)$ The average time a car is in the system $=5$ minutes $($round your response to two decimal places$).$

b$)$ The average number of cars in the system $=1\mathrm{.}5$ cars $($round your response to two decimal places$).$

c$)$ The average number of cars waiting to receive service $=$ cars $($round your response to two decimal places$).$