Question

20 points !!

Alexis has the following grades in his math class:


Homework grades: 76, 82, 85

Quiz grades: 74, 80, 80

Test Grades: 60, 68


If the teacher weights homework at 10%, Quizzes at 20%, Tests at 60%, what is her current class average? Please be careful with this one the categories don’t sum to 100% because she hasn’t taken her final exam yet.


Question 5 options:


a) 81


b) 76


c) 69


d) 72

Answer 1

C

Explanation:

First we need to find the average in every section, such as the Hw, quiz and tests.

(76+82+85)/3=81 Hw

(74+80+80)/3=78 quiz

(60+68)/2=64 test

Hw is weighted at 10% so it is 81×1=81.

Quizzes are weighted at 20% so 78×2=156

Tests are weighted at 60% so 64×6=384.

Add them all up then divide them by 9,

(81+156+384)/9= 69%