Hey everybody I am having trouble with thisproblem: Assume that the final grade

Question

Hey everybody I am having trouble with thisproblem:

Assume that the final grade in your Biologycourse is comprised of several factors each of which is weighted asfollows:
Laboratory:                25%
FinalExam:                30%
ClassExams:              20% each
Class Participation:       5%

If you score 92 in the lab, 85 on the final exam, 75 and 82 on thetwo class exams and your class participation is 90, what is youweighted average in this course?

I have the ANSWER 84.4 But I need to know how do you getthis. Please show all steps. Will give a Lifesaver. Thanks

Explanation / Answer

The weighted average is calculated as such: 0.25*92 + 0.30*85 + 0.20*75 + 0.20*82 + 0.05*90 = 84.4

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