Respuesta :

jaderose51529

Answer:

Girls = 390

Step-by-step explanation:

Set up a proportion:

In a sample of 3:2, you have 5 kids in all.

So the the ratio of girls to kids in a sample of 5 is 2:5.

So set up a proportion:

(3/5) = (x/650)

5x = 650(3)

5x = 1950

x = 390

mhanifa

Answer:

  • 390

Step-by-step explanation:

Let number of boys be b and girls be g. Then we have:

  • g/b = 3/2
  • g + b = 650

From the first equation b is:

  • b = 2g/3

Substitute b in the second equation

  • g + 2g/3 = 650
  • 5g/3 = 650
  • g = 650*3/5
  • g =  390

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