SOLUTION: A professor announces that course grades will be computted by taking 40% of a student's project score (0-100 points) and adding 60% of the student's final exam score (0-100 points)

Question 206917This question is from textbook
: A professor announces that course grades will be computted by taking 40% of a student's project score (0-100 points) and adding 60% of the student's final exam score (0-100 points). If a student gets an 86 on the project, what scores can she get on the final exam to get a course grade of at least 90? This question is from textbook

Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
Let P = project grade,,,and E = Exam grade
.
40% * P + 60% * E = 90
.
.40*86 + .6*E = 90
.
34.4 + .6*E = 90
.
.6E = 55.6
.
E = 92.67
.
Check,,,.4(86) + .6(92.67 = 90,,,,,ok
.
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