Respuesta :
Answer:
120
Step-by-step explanation:
Boys will be the'2' of this ratio
e we know that 2x3 = 6
so, 40 x 3 will give us the number of girls
ratio can be simplified to 1:3
for every 1 boy there are 3 girls and together there are 4 total kids. So there would be 30 girls and 10 boys in the classroom.