Respuesta :

eufrocinecoffe

I think there is 9.

before it was simplified it might have been 6:9

then you simplify by 2 and get 3:2.

But i might be wrong so idk

vidalmari6p99qfk

Answer:

12   girls   18 boys Total 30 students

Step-by-step explanation

x=number of girls

18/3 = x/2

3x=18*2

3x=36

x=12

  Other proof

x= number of groups

3x +2x = 30

5x=30

x=6

3*(6) + 2*(6) = 30

18+12=30