Posted by James on .
a student scores 76,82,83 on the first three test, she has a 92 homework averge. if the final exam is 50% of grade and homework is 10% and the test average (nit including the final) is 40% then what grade should she get on the final exam to get a 87.5 in the class?

Math ave grade 
Reiny,
Let her grade on the final be x
.5x + .1(92) + .4(76+82+83)/3 = 87.5
solve for x
(I get 92.3)