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Home > ACC7 > Chapter 7 Unit 4 > Lesson CC2: 7.1.8 > Problem 7-90
Ida wants to buy a car, but she currently does not have any money. The car she wants costs
She could borrow
at a monthly interest rate of simple interest and pay the total after months. Write a simple-interest expression and calculate what she would owe at the end of months. Use the equation for simple interest from the Math Notes box in this lesson.
where: dollars per month in interest interest over months How much total money does Ida owe under this option if her borrowed amount is
and her interest would be ? She could borrow
at a weekly interest rate of simple interest and pay the total after months. Show calculations and a written explanation to justify your answer. Use the same interest formula from part (a).
There are
weeks in a year. Ida owes
with this option. Be sure to show how to get this answer and explain which one of the two loan options is better and why.