SOLUTION: Aura took three biology exams and has an average score of 89. Her second exam score was 10 points better than her first, and her third exam score was 1 points better than her secon
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Question 1106954: Aura took three biology exams and has an average score of 89. Her second exam score was 10 points better than her first, and her third exam score was 1 points better than her second exam. What were her three exam scores? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Average is total/n
89*3=267 total points
x first exam, x+10 second, and x+11 is third
3x+21 is total=267
3x=246
x=82 on first exam
92 on secod
93 on third
82 is 7 below the average, 92 is 3 above, 93 is 4 above, so checks.
