Respuesta :

jessica2674

Answer:

the answer is 21 because

Step-by-step explanation:

28÷4=7

28-7=21

dinithisula

Answer:

21 boys

Step-by-step explanation:

girls:boys

    4:3

  28:x

girls:

 4 became 28 by multiplying 4 by 7

So do the same to boys

Therefore,

 when we multiply 3 by 7

     =21 boys

Hope you got it

If you have any question just ask me

If you think this is the best answer please mark me as BRAINLIEST