Asked by Taylor

Mallory had an average of 87 on her first three algebra quizzes. She made the same score on the first two quizzes and 9 points higher on the third quiz. What was her grade on each quiz?
Answered by PsyDAG
mean = sum of scores/number of scores
Let x = score on first two quizzes
87 = (2x + x+9)/3

Solve for x, then x+9.
Answered by Taylor
It worked, thanks!
Answered by PsyDAG
You are welcome.
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