Question 1022375: Ginny's median score on three tests was 88. Her mean score was 87 and her range was 5. What were her three test scores?
Answer by macston(5194)   (Show Source):
You can put this solution on YOUR website! Ginny's median score of 88 would be her middle score.
Her average (mean) score is 87,
so the sum of her scores is 3(87)=261.
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Let her low score=x, her high score is x+5 (range is 5):
(x)+88+(x+5)=261
2x+93=261
2x=168
x=84
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Ginny's low score was 84 points
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Ginny's high score was (84 points)+(5 points)=99 points
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Ginny's three scores were 84, 88, and 89.
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CHECK:
Ginny's average (mean)=87
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(sum of scores)/(number of scores)=(average of scores)
((84)+(88)+(89))/3=87
87=87
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