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At a certain high school the respective weights for the following subjects are math 3 English 3 history 2 science 2 What is a students average whose marks were the following 89 92 94 81 85?
Wiki User
∙ 13y ago
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?
ANSWER
weight for math = 3=w1
weight for English = 3=w2
that for history = 2=w3
that for science = 2 =w4
that for arts = 1=w5
total of weight = w = w1 +w2 + w3+ w4 +w5 = 3+3+2+2+1=11
geometry mark = 89
American literature = 92
American history = 94
Biology = 81
sculpture = 85
so average = ((89*w1)+(92*W2)+(94*W3)+(81*w4)+(85*w5)/(w1+w2+w3+w4+w5)
=((89*3)+(92*3)+(94*2)+(81*2)+(85*1)/(w1+w2+w3+w4+w5)
=978/11=88.909
Wiki User
∙ 12y ago
Wiki User
∙ 13y ago88.9
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