SOLUTION: 20% of the students in a class have an A grade in math. If 12 students have no A's in math, how many students are in the class?

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Question 1201727: 20% of the students in a class have an A grade in math. If 12 students have no A's in math, how many students are in the class?
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

n = number of students in the class.
20% have an A, the remaining 80% do not have an A.
80% of n = 0.80n = 12 students do not have an A.
0.80n = 12
n = 12/0.80
n = 15

Answer: 15