Question 308650: John has taken 4 tests and has an 85% average. What must he get on the next test to have an average of 87%. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! John has taken 4 tests and has an 85% average. What must he get on the next test to have an average of 87%.
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Average = total points/# of tests
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He has 4*85 = 340 points after the 4 tests.
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Let his score on the next test be "x"
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Equation:
(340+x)/5 = 87
340 + x = 435
x = 95
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Cheers,
Stan H.
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