Answer: 10 hours
Step-by-step explanation:
Given
Slow fix auto charge $28 for parts and $48 per hour of labor
We work charge $59 for parts and $44.90 per hour of labor
Suppose both works for x hours
Cost of Slow fix=
Cost of We work=
When these costs are the same
Answer:
The appropriate solution is:
(1) 22.81 minutes
(2) 0.171
Step-by-step explanation:
According to the question, the values will be:
The service rate of guess will be:
=
=
The mean arrival rate will be:
The mean service rate will be:
(1)
The average time a cab must wait will be:
⇒
⇒
⇒
⇒
(2)
The required probability will be:
⇒
⇒
⇒