SOLUTION: On a biology test, the highest grade was 68 points more than the lowest grade. The sum of the two grades was 128. Find the lowest grade.

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Question 791476: On a biology test, the highest grade was 68 points more than the lowest grade. The sum of the two grades was 128. Find the lowest grade.
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
x+x+68=128
2x=128-68
2x=60
x=60/2
x=30