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Elizabeth has taken 3 exams so far for her sociology class. The first test is worth 35% of her grade, and she scored a 95. Her second and third tests are each worth 20% of her grade. She scored an 80 on test 2 and a 74 on test 3. What is her weighted average score in class so far?

Elizabeth has taken 3 exams so far for her sociology class. The first test is worth 35% of her grade, and she scored a 95. Her second and third tests are each worth 20% of her grade. She scored an 80 on test 2 and a 74 on test 3. What is her weighted average score in class so far?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Elizabeth has taken 3 exams so far for her sociology class. The first test is worth 35% of her grade, and she scored a 95. Her second and third tests are each worth 20% of her grade. She scored an 80 on test 2 and a 74 on test 3. What is her weighted average score in class so far?
Expert Solution
Step 1
  Weight Marks
first test 0.35 95
second test 0.2 80
third test 0.2 74

The weighted average is calculated by dividing the sum of multiplying each weight wits its respective value by the sum of weights 

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