Problem:
At the beginning of the school year, Lisa's goal was to earn an on at least of her quizzes for the year. She earned an on of the first quizzes. If she is to achieve her goal, on at most how many of the remaining quizzes can she earn a grade lower than an
Answer Choices:
A.
B.
C.
D.
E.
Solution:
To earn an on at least of her quizzes, Lisa needs to receive an on at least quizzes. Thus she must earn an on at least of the remaining . So she can earn a grade lower than an on at most of the remaining quizzes.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions