SOLUTION: A student averages 85 on 6 different tests. If the lowest score is dropped . The average rises to 90. What was the lowest score dropped

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Question 953285: A student averages 85 on 6 different tests. If the lowest score is dropped . The average rises to 90. What was the lowest score dropped
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28A%2BB%2BC%2BD%2BE%2BF%29%2F6=85
1.A%2BB%2BC%2BD%2BE%2BF=510
Suppose A is the low grade.
%28B%2BC%2BD%2BE%2BF%29%2F5=90
2.B%2BC%2BD%2BE%2BF=450
Subtracting eq. 2 from eq. 1,
A%2BB%2BC%2BD%2BE%2BF-B-C-D-E-F=510-450
A=60