SOLUTION: if I have an 80% in my math class, and the final is worth 25% of my grade. what do I need to get on the final to keep my grade at a B?

Question 932195: if I have an 80% in my math class, and the final is worth 25% of my grade. what do I need to get on the final to keep my grade at a B?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
assume that B is 80% to 90% inclusive:
---
75*80 + 25x = 100*80
25x = 100*80 - 75*80
x = ( 100*80 - 75*80 ) / 25
x = 80
---
answer:
you need 80% or better on the final
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Convert fractions, decimals, and percents:
https://sooeet.com/math/fraction-decimal-percent.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php
RELATED QUESTIONS
I have an 80% in my math class, and my final is worth 15% of my grade. What grade do i... (answered by stanbon)

I have an 80% in my my, and my final exam is worth 20% of my final grade. What grade do I (answered by JBarnum)

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

I have a 75% in my math class (overall score) and my final is worth 20% of that. To pass... (answered by Alan3354)

If I have a 76% average in my class and I am taking a final exam worth 25% of my final... (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 am getting a 78% in my class and my final is worth 10% of my grade, what do I need... (answered by ben720)

If my math final is worth 10% of my grade and I have a 90 in the class, what do I need to (answered by tommyt3rd)

If I have a 60 in a class and my final is worth 25%, what do I need to get on my final to (answered by JulietG)