SOLUTION: If a student wanted to raise his overall grade by 5% and had an average of 75% over four tests what does he have to get on his fifth test

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Question 328192: If a student wanted to raise his overall grade by 5% and had an average of 75% over four tests what does he have to get on his fifth test
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
4*75+x=80*5
300+x=400
x=400-300
x=100 required grade on the fifth test to raise his average by 5%.