Three quarters of the girls in a class are boys, and there are fewer girls than boys (1).

Formula:

It can be seen from "three quarters of the girls in a class are boys" that the ratio of male to female is 3:4.

0 of (4-3)/4 = 65438+4.

I wish you progress in your study and hope to adopt it. Thank you! ! ! ! ! ! ! ! ! ! ! ! O(∩_∩)O~