Problem:
Mary is about to pay for five items at the grocery store. The prices of the items are , and . Mary will pay with a twenty-dollar bill. Which of the following is closest to the percentage of the that she will receive in change?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
The five items cost approximately dollars, so Mary's change is about , which is percent of her .
The problems on this page are the property of the MAA's American Mathematics Competitions