Question

John is taking a math test, and has already finished. There are 15 questions, 1 point per question. He wants to know how much of his grade is one question.

(Replace John with me ;-;)

Answer 1

I don't know how many grades are avaible in your country, in my country (germany) there are 6 grades.

Since there are 15 points to get, you can divide the number of points with the number of grades:

15:6 = 2,5

This shows that 1 grade is equivalent to 2,5 points on the test.