Robert knows from reading his syllabus in intermediate algebra that the average of his chapter tests accounts for 60 % ( 0.6 ) of his overall course grade. He also knows that the final exam counts as 40 % ( 0.4 ) of his grade. Suppose that the average of Robert’s chapter tests is 89 % . a. Determine the range of grades that he would need on his final exam to get an “ A” in the class. (Assume that a grade of“A” is obtained if Robert’s overall average is 90 % or better.) b. Determine the range of grades that Robert would need on his final exam to get a “B” in the class. (Assume that a grade of “ B” is obtained if Robert’s overall average is at least 80 % but less than 90%.)
Robert knows from reading his syllabus in intermediate algebra that the average of his chapter tests accounts for 60 % ( 0.6 ) of his overall course grade. He also knows that the final exam counts as 40 % ( 0.4 ) of his grade. Suppose that the average of Robert’s chapter tests is 89 % . a. Determine the range of grades that he would need on his final exam to get an “ A” in the class. (Assume that a grade of“A” is obtained if Robert’s overall average is 90 % or better.) b. Determine the range of grades that Robert would need on his final exam to get a “B” in the class. (Assume that a grade of “ B” is obtained if Robert’s overall average is at least 80 % but less than 90%.)
Solution Summary: The author calculates the range of marks that Robert needs to score in his final exam to get an A grade.
Robert knows from reading his syllabus in intermediate algebra that the average of his chapter tests accounts for
60
%
(
0.6
)
of his overall course grade. He also knows that the final exam counts as
40
%
(
0.4
)
of his grade. Suppose that the average of Robert’s chapter tests is
89
%
.
a. Determine the range of grades that he would need on his final exam to get an “ A” in the class. (Assume that a grade of“A” is obtained if Robert’s overall average is
90
%
or better.)
b. Determine the range of grades that Robert would need on his final exam to get a “B” in the class. (Assume that a grade of “ B” is obtained if Robert’s overall average is at least
80
%
but less than 90%.)
During their freshman year, Derek's GPA was 3.5 and Terry's was 3.1. During their sophomore year,
Derek's GPA was 3.6 and Terry's was 3.5. Which of the following is not necessarily true?
Choose the correct answer below.
A. Terry's overall GPA for the two year-period was somewhere between 3.1 and 3.5.
B. Terry's overall GPA for the two-year period could be lower, higher or the same as Derek's
overall GPA for the two-year period.
C.
Derek's overall GPA for the two year-period was somewhere between 3.5 and 3.6.
D. Terry had a lower GPA than Derek during their freshman year and again in their sophomore
year.
E. Derek's overall GPA for the two-year period was higher than Terry's because their GPA's may
have been weighted differently.
OF. Derek had a higher GPA than Terry during their freshman year and again during their
sophomore year.
Suppose that the exam score for Class A is 80% and for Class B is 54%. When all the scores for both Class A and Class B are combined, the average is 76%. What percentage of students are in Class A?
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