Question

Correct answers only please!

Mark has the following averages in his AMDM math class:

Homework: 95

Quiz average: 80

Test average: 67

Final Exam: 60

If the teachers weights Homework at 10%, Quizzes at 20%, Tests at 50%, and Final Exam at 20%, What is Marks class average?


A. 61%

B. 71%

C. 74%

D. 82%

Answer 1

B. 71%

Explanation:

.10(95) +.20(80) +.50(67) +.20(60) = 71

Answer 2

B.71%

Explanation:

Weighted Mean is (All X * W)/sum of W

X for averages and w for weight

X W (X*W)

HW 95 10 980

Quiz 80 20 1600

Test 67 50 3350

Final 60 20 1200

Total 100 7100

Weighted Mean = 7100/100 = 71%