Unformatted text preview: he first two exam scores
are 78 and 83. Assuming that grades are assigned according to the standard scale and there are no
weights assigned to any of the grades is it possible for the student to receive an A in the class and
if so what is the minimum score on the third exam that will give an A? What about a B?
Okay, let’s start off by defining p to be the minimum required score on the third exam.
Now, let’s recall how grades are set. Since there are no weights or anything on the grades, the
grade will be set by first computing the following percentage. actual points
= grade percentage
total possible points
Since we are using the standard scale if the grade percentage is 0.9 or higher the student will get
an A. Likewise if the grade percentage is between 0.8 and 0.9 the student will get a B.
We know that the total possible points is 350 and the student has a total points (including the third
exam) of, 4 + 8 + 7 + 7 + 9 + 78 + 83 + p = 196 + p The smallest possible percentage f...
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- Spring '12
- ........., Paul Dawkins