Problem:
Tori's mathematics test had problems: arithmetic, algebra, and geometry problems. Although she answered of the arithmetic, of the algebra, and of the geometry problems correctly, she did not pass the test because she got less than of the problems right. How many more questions would she have needed to answer correctly to earn a passing grade?
Answer Choices:
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B.
C.
D.
E.
Solution:
Since , she answered questions correctly. She needed to pass, so she needed more correct answers.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions