Question

Mr. Cox is considering changing his grading formula so that tests and quizzes make up 80% of a student's final grade, homework makes up 15% of a student's final grade, and class participation makes up 5% of a student's final grade. If a student has a 100% homework average, an 85% quiz/test average, and a 90% class participation average, what is their final grade under the new grading formula?

a) 87.5%
b) 89%
c) 88.5%
d) 86%

Answer 1

To calculate the final grade, multiply each average by its weight and sum the results.

Step-by-step explanation:

To calculate the final grade under the new grading formula, we need to multiply each average by its corresponding weight and then sum up the results. In this case, the student's homework average of 100% is multiplied by the weight of 15%, the quiz/test average of 85% is multiplied by the weight of 80%, and the class participation average of 90% is multiplied by the weight of 5%. Adding up these weighted averages gives us the final grade:

Final Grade = (100% * 15%) + (85% * 80%) + (90% * 5%) = 15% + 68% + 4.5% = 87.5%

Therefore, the student's final grade under the new grading formula is 87.5%, which is option a).