Nathan K.

asked • 09/07/16

Word Problems, Help

 
 
Use an algebraic approach to solve the problem. (Objective 2)

Aura took three biology exams and has an average score of 86. Her second exam score was 13 points better than her first, and her third exam score was 1 points better than her second exam. What were her three exam scores?

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Mark M. answered • 09/07/16

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The three scores: s, s + 13, s + 14
The average
(s + s + 13 + s + 14) / 5 = 86
 
Can you solve for "?"
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Nathan K.

where does the 5 come from?!? what is the second step? Can you please provide more explanation? or a second step that could help me see?
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09/07/16

Mark M.

Sorry! My error. It should be 3 for the three scores being averaged.
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09/07/16

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