Okay so my current grade as in my final is a 78 , i have a exam worth 10% percent what do i need to make inorder to pass my school can only pass with a 80 above

Question

I need a 80 above to pass my geometry class my exam is worth 10 percent 

Answer 1

Since you have 10% of the grade remaining to be determined, your current score of 78 is 90% of your grade.  You need

 

[(90)(78) + (10)x]/(90 + 10) ≥ 80

 

Solve for x and get x ≥ 98.  It will not be easy.