a class has 27 students. fifteen are boys and the rest are girls. what is the ratio of girls to total students?
There are 27 - 15 = 12 girls in the class.
The ratio of girls to total students can be written as:
12 : 27
Simplifying this ratio by dividing both numbers by 3, we get:
4 : 9
Therefore, the ratio of girls to total students is 4:9.