There are 25 students in a class. sixteen of those students are boys. what percent of the class are girls?

the percent of girls in the class is %

 25 divided by 5 = 5 thus 5 = 20 percent of 100.
20 divided by 5 = 4 thus 1 = 4 percent of 100

So, 16 = 64% of the class, so subtract.
100 - 64 = 37.

So 37% of the class are girls.