SOLUTION: a person took four tests and got an 88, 86, 84, an a 93. the last test is worth 3 test grades. what do u have to get on the last test to get a 90 for the class?

Question 570888: a person took four tests and got an 88, 86, 84, an a 93. the last test is worth 3 test grades. what do u have to get on the last test to get a 90 for the class?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a person took four tests and got an 88, 86, 84, an a 93. the last test is worth 3 test grades. what do u have to get on the last test to get a 90 for the class?
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Equation:
(88+86+93+3x)/6 = 90
--------------
267+3x = 540
3x = 273
x = 91
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Cheers,
Stan H.
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