Please help me find out my grade?

Question

I am having a hard time trying to figure out what my grade is because my professor has the following setup

3 quizzes- 3/5, 4.5/5, and 4.5/5 in total worth15% of the grade.

3 Research activities- 15/15, 13.75/15, 12/15 in total worth 45% of the grade.

1 Final Exam- 99.3/145 worth 40% of the grade.

Can anyone help?

Answer 1

Use the formula:

(0.15 * quiz average in percent) + (0.45 * research average in percent) + (0.40 * final in percent)

quiz average percentage = (60 + 90 + 90) / 3 = 80%

research average percentage = (100 + 91.67 + 80) / 3 = 90.56%

final percentage = 93.5 / 145 = 68.5%

Totaling them:

(0.15 * 80%) + (0.45 * 90.56%) + (0.40 * 68.5%)

12% + 40.8% + 27.4% = 80.2%

Answer 2

I think u got 80.6/100

Answer 3

Quizzes      =    12    = (3+4.5+4.5)

Research    =  40.75  = (15+13.75+12)

Final Exam  = 27.39

Total Grade = 80.14%