SOLUTION: A student’s grade depends on her score on four different exams. Her average on the first three exams is 92. What must she score on her fourth exam in order to guarantee a final ave
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Question 468890: A student’s grade depends on her score on four different exams. Her average on the first three exams is 92. What must she score on her fourth exam in order to guarantee a final average of at least a 90? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A student’s grade depends on her score on four different exams. Her average on the first three exams is 92. What must she score on her fourth exam in order to guarantee a final average of at least a 90?
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Total points on 1st three exams = 3*92 = 276
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Let the score on the final test be "x":
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Solve:
(276+x)/4 >= 90
276 + x >= 360
x >= 84
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Cheers,
Stan H.
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