SOLUTION: Michael scored 68, 77, and 98 on three test. He needs to have an average of at least 85. what must he score on the forth test?
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Question 353124: Michael scored 68, 77, and 98 on three test. He needs to have an average of at least 85. what must he score on the forth test? Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! Michael scored 68, 77, and 98 on three test. He needs to have an average of at least 85. what must he score on the forth test?
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Let x = score on fourth test
then
(68+77+98+x)/4 >= 85
(243+x)/4 >= 85
243+x >= 340
x >= 97
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He has to score a 97 or higher.
