Question 252729: I'm having trouble setting up this problem.
At a certain high school the respective weights for the following subjects are: Mathematics 3, English 3, History 2, Science 2, and Art 1. What is a student's average whose marks were the following: Geometry 89, American Literature 92, American History 94, Biology 81, and Sculpture 85?
Thanks in advance, Daniel
Answer by richwmiller(17219)   (Show Source):
You can put this solution on YOUR website! Usually for an average you just add up the amounts (in this case grades-89,92,94,81,and 85) and then divide by the number of items.(in this case 5)
I don't know what this weights business refers to.
I checked at various schools and the weights are decimals or percents.
http://mathforum.org/library/drmath/view/57605.html
perhaps they are multipliers here and a weight of 2 means it counts twice?
3*89+3*92+2*94+2*81+85=978
for a total of 11
978/11=88.9
|
|
|
