DeShawn's Detailing is a service that details cars at customers' homes or places of work.DeShawn's cost for a basic detailing package is $40,and he charges $75 for this service.For a total price of $90,DeShawn will also detail the car's engine,a service that adds an additional $20 to the total cost of the package.What is the marginal cost of adding the engine detailing to the basic detailing package?

Question

Quizplus · Accepted Answer

The marginal cost of adding the engine detailing to the basic package is simply the cost of the additional service, which is $20. The other options are not correct, as there is no indication in the problem that the marginal cost includes the value of DeShawn's time, or that it is significantly higher than the cost of the service itself.

DeShawn's Detailing Is a Service That Details Cars at Customers