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Jacui has grades of 82 and 73 on her first two algebra tests. If she wants an average of at least 71, what possible scores can she make on her third test?
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Jacui has grades of 82 and 73 on her first two algebra tests. If she wants an average of at least 71, what possible scores can she make on her third test?
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Question 726978:
Jacui has grades of 82 and 73 on her first two algebra tests. If she wants an average of at least 71, what possible scores can she make on her third test? Answer by checkley79(3341) (Show Source):
You can put this solution on YOUR website! (82+73+X)/3>=71
(155+X)/3>=71 CROSS MULTIPLY
155+X>=71*3
155+X>=213
X>=213-155
X>=59 OR BETTER MUST BE MADE ON THE 3 RD. TEST TO HAVE A 71 AVERAGE.
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