SOLUTION: I have an 84.7 average in a class. Tests are 50% of our grade, what is the lowest I can get on a test in order to keep my 85 average.

SOLUTION: I have an 84.7 average in a class. Tests are 50% of our grade, what is the lowest I can get on a test in order to keep my 85 average.

Algebra.Com

Question 921137: I have an 84.7 average in a class. Tests are 50% of our grade, what is the lowest I can get on a test in order to keep my 85 average.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
0.5*0.847 + 0.5x = 0.85

0.4235 + 0.5x = 0.85

0.5x = 0.85 - 0.4235

0.5x = 0.4265

x = 0.4265/0.5

x = 0.853

You need to get an 85.3% on the test (lowest you can go) to keep your 85% average.

RELATED QUESTIONS
My grade in a certain math class is determined by three tests. My highest test score will (answered by richwmiller,solver91311)

If I have an average of 98% in the class. What is the lowest grade I can get on my final... (answered by Alan3354)

My grade in a certain math class is determined three tests. My highest test score will... (answered by Boreal)

If I have an 80% in a class, what is the lowest score I can get on the final that is... (answered by jim_thompson5910)

I have a 81.17% in my class and i need a 78% to pass the class. what is the lowest grade... (answered by richard1234)

[ I have a 83% in my statistics class and our final is worth 25% of our grade. What do I... (answered by TimothyLamb)

If I have a 95% in a class and my final is worth 20% what is the lowest grade I can get... (answered by Alan3354)

If I have a 74% in my class and my final coming up is worth 25% of my grade, what is the... (answered by josmiceli)

If I have an 85% class average and my final is worth 20% of my grade. What grade do I... (answered by ankor@dixie-net.com)