Respuesta :

Answer:

Step-by-step explanation:

There are 17 different solutions to this question. A few of these are:

6 is 50% of 12 and 75% of 8

15 is 50% of 30 and 75% of 20

21 is 50% of 42 and 75% of 28

42 is 50% of 84 and 75% of 56