Astronomy Equations
February 7th, 2010 / Author: admin
Need help determining equation for my final grade?
I have a 94% in my Astronomy class. I would like to know what percent I would have to get on my final to get at least a 90% overall grade. The finals are worth 20% of our grade.
A practical use for algebra!
80% of your grade is a 94. 20% is your final, which is unknown (x). You want the total to be at least 90:
0.8*94 + 0.2*x >= 90
Solving for x:
x >= 74
So you need at least a 74%.
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