Respuesta :

editingforever
45 are girls. do you need an explanation? :)
BenDaChickenMaster
40% of the class is boys and 60% is girls.

1/2 of the number of boys is 15.

So 20% of the class is 15 boys.

But we need to find 60% of the class. So we multiply that 20% by three.

There are 45 girls and 30 boys.