40% of my class is girls. 30% of girls play soccer. 24 girls play soccer. How many boys in class?
If 3/10 of 2/5x = 24, then 6/50x = 24. x = the class. Then, we can multiply both sides by 50/6 and get that x = 200. Using that 2/5 of the class is girls, 3/5 of the class is boys. So, 200 * 3/5 = 120 boys.
24 girls= 30% of girls
8 girls= 10% of girls
80 girls=100% of girls
80 people: 40 % of class
20 people: 10% of class
200 people: 100% of class
200 people in the class, 80 girls, so 120 boys.
We know the amount of girls that play soccer and the percentage, so set them equal
30% of the girls in the class is 24 girls.
You can create a proportion to find the total amount of girls in the class
out of 3 girls who play soccer = 24 girls
there are 10 girls in the total class = 80 girls
There are 80 girls in the class.
To find the number of BOYS, create another proportion to find the students.
4 girls = 80 girls
10 students = 200 students
There are 200 students in the class.
Now subtract the amount of girls to find the boys
I wonder... How many boys play soccer??