SOLUTION: I have 91 in my class and my final exam is worth 10% of my grade. How low can I score and still have an A

Algebra ->  Average -> SOLUTION: I have 91 in my class and my final exam is worth 10% of my grade. How low can I score and still have an A      Log On


   

Question 934388: I have 91 in my class and my final exam is worth 10% of my grade. How low can I score and still have an A
Answer by TimothyLamb(4379) About Me  (Show Source):
You can put this solution on YOUR website!
assume an A is for the range 90% to 100% inclusive:
---
(1 - 0.10)*91 + 0.10x = 1.00*90
(0.90)*91 + 0.10x = 90
0.10x = 90 - (0.90)*91
x = (90 - (0.90)*91)/0.10
x = 81
---
answer:
you need 81 or higher on the final
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations with quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Solve systems of linear equations up to 6-equations 6-variables:
https://sooeet.com/math/system-of-linear-equations-solver.php
---
Send and receive free text messages online:
https://sooeet.com