SOLUTION: The average exam for 10 students in a statistics class was 85. One student dropped the class, changing the average exam score of the remaining students to 90. what was the exam sco

Question 946137: The average exam for 10 students in a statistics class was 85. One student dropped the class, changing the average exam score of the remaining students to 90. what was the exam score of the student who dropped the class?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Since the average was 85, the sum of their scores was 850, since there were 10 of them.
Let's call the dropped exam X.

So then,

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