Question 145949
Alvin has scores of 94, 80, 89, and 92 on his first four exams in a symbolic logic class. If the fifth test is the last test, what must he score on the fifth test to have an overall average of 90?
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Let the 5th test score be "x".
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EQUATION:
(94 + 80 + 89 + 92 + x)/5 = 90
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(94 + 80 + 89 + 92 + x) = 450
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355 + x = 450
x = 95
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Cheers,
Stan H.