Question 705901: Betsy was sick, so she had to make up an exam a few days after her class took the test. Without her test score, the class average was 71. After she took the test, the class average was 72. If her test score was 96 percent, how many students were in the class?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Betsy was sick, so she had to make up an exam a few days after her class took the test. Without her test score, the class average was 71. After she took the test, the class average was 72. If her test score was 96, how many students were in the class?
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Let "x" be the number of students in the class.
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Sum of the scores of the x-1 students is 71(x-1).
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Sum of the scores of the x students is 72x
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Equation:
71x-71 + 96 = 72x
x = 25
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Cheers,
Stan H.
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