SOLUTION: 80% of my grade is an 84. The final is worth 30% of our grade. What is the LOWEST score I can get and pass the class with an 80%?

Question 858166: 80% of my grade is an 84. The final is worth 30% of our grade. What is the LOWEST score I can get and pass the class with an 80%?
Answer by JulietG(1812) (Show Source): You can put this solution on YOUR website!
How can 80% of your grade be 84 with a final left that counts for 30%? That's 110%.
.
Let's assume you meant that 30% of the grade is your final. Therefore, 70% is 84.
In this case,
84+84+84+84+84+84+84+x+x+x = 80*10 (3x because the final is weighted at 30%)
588 + 3x = 800
Subtract 588 from each side
3x = 212
Divide each side by 3
x = 70
.
If these are not the correct values, please repost.

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