Homework Help: math

Posted by Danica on Sunday, October 24, 2010 at 4:29pm.

A math teacher calculates grades as follows:Grade=[2 test averages+quiz average/3] After 3 tests and 2 quizzes your test average is 83 and your quiz average is 89. You took your fourth test today and noticed that your overall average grade has dropped to an 83. What was your score on the fourth test?

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