Why might an economics professor who is good at fixing cars

Why might an economics professor who is good at fixing cars still prefers to take his automobile to a garage for a tune-up?

If the same professor decides to get a tutor for his daughter in economics instead of tutoring her himself does the same principle apply?

Solution

Yes because of opportunity cost which is the mainfactor. It is wiser to pay 500 dollor to mecanic then to use your one hour which is worth thousands of dollor.

B) yes because if they will hire a teacher it will count in GDP and moreover it will have the opportunity cost concept.