Answer:
![(9)/(16)](https://img.qammunity.org/2023/formulas/mathematics/high-school/mstrd8isgl9uvzmqr3wvz9qr8w8nu1yu5o.png)
Explanation:
We need to find the ratio of girls to the total number of students. That means our ratio is going to be 72 (the number of girls) over 56+72 (boys + girls, the total number of students).
When you add 56+72, you'll get 128 in the denominator. Continuing to simplify the fraction, you'll end up with:
=
![(9)/(16)](https://img.qammunity.org/2023/formulas/mathematics/high-school/mstrd8isgl9uvzmqr3wvz9qr8w8nu1yu5o.png)
Depending on what format your teacher wants, this can be written as
or 9:16.