Problem:
Antonette gets  on a -problem test,  on a -problem test and  on a -problem test. If the three tests are combined into one -problem test, which percent is closest to her overall score?
Answer Choices:
A.  
B.  
C.  
D.  
E.  
Solution:
Note that of is of is and of is . Antonette answers problems correctly out of problems in all. Her overall score is or .
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions