SOLUTION: I have 4 math test this quarter, so far I have made a 80,73, and 60. If I want to have at least an average of 78, what is the lowest grade I can make

Question 1070076: I have 4 math test this quarter, so far I have made a 80,73, and 60. If I want to have at least an average of 78, what is the lowest grade I can make
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I have 4 math test this quarter, so far I have made a 80,73, and 60. If I want to have at least an average of 78, what is the lowest grade I can make.
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Points you have:: 80+73+60 = 213
Points you need:: 4*78 = 312
Points you need on 4th test:: 312-213 = 99
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Let the 4th test score be x::
213+x = 4*78
x = 312-213 = 99
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Cheers,
Stan H.

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