Question 396799
A student scored 71, 83, and 96 on three algebra tests. What must he score on the fourth test in order to have an average of at least 85?
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Let the 4th test score be "x":
Equation:
(71+83+96+x)/4 = 85
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250+x = 4*85
x = 90
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Cheers,
Stan H.