What is 3 over 4 of 12?

The Word "of" in mathematics means multiplied by, and thus we can rewrite the question as 3/4 x 12. To multiply a whole number by a fraction, you need to multiply by the numerator, then divide by the denominator. In this case, 12x3 = 36, /4 = 9. Therefore 3/4 of 12 is 9.