Homework Help: Math ave grade

Posted by James on Sunday, December 16, 2012 at 11:59pm.

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, Monday, December 17, 2012 at 8:35am
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)

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