SOLUTION: Use an algebraic approach to solve the problem. (Objective 2)
Aura took three biology exams and has an average score of 85. Her second exam score was 5 points better than her fi
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Question 885897: Use an algebraic approach to solve the problem. (Objective 2)
Aura took three biology exams and has an average score of 85. Her second exam score was 5 points better than her first, and her third exam score was 5 points better than her second exam. What were her three exam scores?
(lowest score)
(highest score)
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
The first, second and third scores, x, y, z, respectively.
.
Her second exam score was 5 points better than her first, and her third exam score was 5 points better than her second exam.
and .
A few different ways to go.
The last two equations: and ; substitute into the average85 equation:
----ONE of the scores, the second score.
-
and .
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