SOLUTION: I have a 87% in my class and my final is worth 15%, what grade do I need on my final to pass with an 85 , or 86%?

Question 877599: I have a 87% in my class and my final is worth 15%, what grade do I need on my final to pass with an 85 , or 86%?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Final is worth 15%
Rest of classwork is worth 85% (since 100 - 15 = 85)

Let x = grade on final

0.87*0.85 + x*0.15 = 0.85

0.7395 + 0.15x = 0.85

0.15x = 0.85 - 0.7395

0.15x = 0.1105

x = 0.1105/0.15

x = 0.73666666666667

So you need to get at least 73.666666666667% on the final to get an 85% or better as an overall grade.
RELATED QUESTIONS
I have a 91% in my class and my final is worth 15%, what grade do I need on my final to... (answered by MathLover1)

If I have an overall average of 85% in my class, and the final exam counts for 40% of my... (answered by jim_thompson5910)

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

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 an 80% in my math class, and my final is worth 15% of my grade. What grade do i... (answered by stanbon)

I have a 60% and need 70% to pass. My final is worth 15% of my grade. What do i need to (answered by Alan3354)

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)

if i have a 68 in my algebra and my final is worth 20% of my grade what do i need to get... (answered by Alan3354)

If I have a 62.38% in a class and my final is worth 40% of my grade, what grade do i need (answered by jsmallt9)