Calculate the insurance costs.
The Greene family obtains bodily injury and property damage automobile insurance in the amount of 50/100/10. The car that they insure is not driven to work, and no male drivers under twenty-five use the car.

a. What does the Greene family pay as an annual premium? $450.60 or $444.60

b. How much would it cost him to purchase insurance in the amount of 100/300/25? $474.50 or $480.70

c. What is the difference in cost? $23.90 or $30.10