Respuesta :

Answer:

12 and 16

Step-by-step explanation:

The ratio between the groups is 3:4, so the fractions are 3/7 and 4/7.

3/7 (28) = 12

4/7 (28) = 16

Check your answer: 12 + 16 = 28, and 12/16 = 3/4.