Respuesta :

4) 28% = 28/100 = 7/25

5) 63% = 63/100

7) 75% = 75/100 = 3/4

8) 30% = 30/100 = 3/10

10) 5% = 5/100 = 1/20

11) 90% = 90/100 = 9/10