SOLUTION: On a math test, 12 students earned an A. This number is exactly 25% of the total number of students in the class. How many students are in the class?

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Question 384645: On a math test, 12 students earned an A. This number is exactly 25% of the total number of students in the class. How many students are in the class?
Answer by nerdybill(7384) About Me  (Show Source):
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On a math test, 12 students earned an A. This number is exactly 25% of the total number of students in the class. How many students are in the class?
.
Let N = number of students in class
then
.25N = 12
N = 12/.25
N = 48