Percentage to Letter Grade

I must create a function that outputs a letter grade based on the combined percentage a student scored on an multiple choice quiz and an essay. The multiple choice part of the quiz is worth 60% of the total grade and the essay is worth 40% of the total grade. How do I write code that incorporates the quiz being 60% worth of the total grade, and the essay being 40% of the total grade? Any help would be appreciated, thank you!

Answer 1

[Walter Roberson]

final_mark = mark_for_first_thing * weight_of_first_thing / 100 + mark_for_second_thing * weight_of_second_thing / 100;