Help for Math Impaired?

Question

I am teaching a college course -- I want to give the students a final grade which is comprised of 50% for the final exam, 30% for the mid-term exam, and 20% for class participation. Unfortunately, I am so math impaired that I cannot come up with a formula for doing this (I am not teaching a math course) although I am sure that it is relatively simple. The mid-term and the final will each have a numeric score. Thanks for any help.

Answer 1

50f+30m+20p = 100
f = final exam grade
m = mid-term grade
p = participation grade

Answer 2

Grading from 0-100%

(5 x final exam score) + (3 x midterm test) + (2 x class work) = final score:

(final score) divided by 10 = final grade.

Example: final test 86%: midterm test 75% : class work 69%

86 x 5 = 430
75 x 3 = 225
69 x 2 = 138
___________
total = 793

793 divided by 10 = 79.3% final grade for Quarter or semester:

Weighting the scores that way is straight forward and simple because you do not have to deal with fractions. It is also easy to write a simple program in basic doing it that way.

Answer 3

(0.5 x final exam grade) + (0.3 x mid-term grade) + (0.2 x class participation grade) = final grade

assuming that all are graded /100