Question

What is the weighted average of four test scores of 60, 70, 80, and 90, with weights of 20%, 20%, 30%, and 30%?(1 point)
Responses

75
75

81
81

73
73

77

Answer 1

Weighted average = 0.2(60) + 0.2(70) + 0.3(80) + 0.3(90) = 12 + 14 + 24 + 27 = 77.