Problem:
Shauna takes five tests, each worth a maximum of points. Her scores on the first three tests are and . In order to average for all five tests, what is the lowest score she could earn on one of the other two tests?
Answer Choices:
A.
B.
C.
D.
E.
Solution:
To average for all five tests, Shauna would have to earn a total of points. So far, she has earned points, so she would need to earn points on the remaining two tests. The most she could score on one test points, so the lowest score she could earn on the other test is points.
Answer: .
The problems on this page are the property of the MAA's American Mathematics Competitions