SOLUTION: mary has grades of 87 and 82 on her first two algebra tests. If she wants an average of at least 78,what possible scores can she make on her third test?
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Question 672805: mary has grades of 87 and 82 on her first two algebra tests. If she wants an average of at least 78,what possible scores can she make on her third test? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! mary has grades of 87 and 82 on her first two algebra tests. If she wants an average of at least 78,what possible scores can she make on her third test?
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Let "x" be her score on the 3rd test.
Equation:
(87+82+x)/3 >= 78
(169+x) >= 234
x >= 65
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Cheers,
Stan H.
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