SOLUTION: i have a 93 so far in my class. the last thing that needs to be done is the final which is 30 percent. what do i need to get in order to stay in the 90's

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Question 822960: i have a 93 so far in my class. the last thing that needs to be done is the final which is 30 percent. what do i need to get in order to stay in the 90's
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = score on the final

The final is worth 30% of your overall grade. The rest is worth 100 - 30 = 70% of your overall grade.

(weight of final)*(score on final) + (weight of class work)*(score on classwork) = final overall grade you want

(0.30)*(x) + (0.70)*(0.93) = 0.90

0.30x + 0.651 = 0.90

0.30x = 0.90 - 0.651

0.30x = 0.249

x = 0.249/0.30

x = 0.83

So you need to get an 83% or higher on the final exam to get a 90% or higher on your overall final grade.