Amy knows from reading her syllabus in intermediate algebra that the average of her chapter tests accounts for 80 % ( 0.8 ) of her overall course grade. She also knows that the final exam counts as 20 % ( 0.2 ) of her grade. Suppose that the average of Amy’s chapter tests is 92%. a. Determine the range of grades that she would need on her final exam to get an “A” in the class. (Assume that a grade of “A” is obtained if Amy’s overall average is 90% or better.) b. Determine the range of grades that Amy would need on her final exam to get a “B” in the class. (Assume that a grade of “B” is obtained if Amy’s overall average is at least 80% but less than 90%.)
Amy knows from reading her syllabus in intermediate algebra that the average of her chapter tests accounts for 80 % ( 0.8 ) of her overall course grade. She also knows that the final exam counts as 20 % ( 0.2 ) of her grade. Suppose that the average of Amy’s chapter tests is 92%. a. Determine the range of grades that she would need on her final exam to get an “A” in the class. (Assume that a grade of “A” is obtained if Amy’s overall average is 90% or better.) b. Determine the range of grades that Amy would need on her final exam to get a “B” in the class. (Assume that a grade of “B” is obtained if Amy’s overall average is at least 80% but less than 90%.)
Solution Summary: The author calculates the range of marks that Amy needs to score in her final exam to get an A grade.
Amy knows from reading her syllabus in intermediate algebra that the average of her chapter tests accounts for
80
%
(
0.8
)
of her overall course grade. She also knows that the final exam counts as
20
%
(
0.2
)
of her grade. Suppose that the average of Amy’s chapter tests is 92%.
a. Determine the range of grades that she would need on her final exam to get an “A” in the class. (Assume that a grade of “A” is obtained if Amy’s overall average is 90% or better.)
b. Determine the range of grades that Amy would need on her final exam to get a “B” in the class. (Assume that a grade of “B” is obtained if Amy’s overall average is at least 80% but less than 90%.)
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