Problem:
Anna enjoys dinner at a restaurant in Washington, D.C., where the sales tax on meals is . She leaves a tip on the price of her meal before the sales tax is added, and the tax is calculated on the pre-tip amount. She spends a total of for dinner. What is the cost of her dinner without tax or tip?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
Tax is and tip is , so her total cost is of her meal. Thus her meal costs .
The problems on this page are the property of the MAA's American Mathematics Competitions