During the First 18 Minutes of a 1

question 27

Multiple Choice

During the first 18 minutes of a 1.0-hour trip, a car has an average speed of 11 m/s. What must the average speed of the car be during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip?

• A)21 m/s
• B)23 m/s
• C)25 m/s
• D)27 m/s
• E)29 m/s

---

Definitions:

Fixed Costs

Fixed costs are business expenses that remain constant regardless of the level of production or sales, such as rent, salaries, or loan payments.

Marginal Cost

The added expense incurred by creating one more unit of a product or service.

Average Total Cost

The total cost of production (fixed and variable costs combined) divided by the quantity of output produced.

Minimum

The lowest permissible limit or the least possible amount or degree of something.