Respuesta :

Answer:

E

Step-by-step explanation:


Answer:

B. 1 1/4 years.

Step-by-step explanation:

13 3/4 - 12 1/2

13 - 12  = 1                     +                     3/4 - 1/2 = 3/4 - 2/4 - 1/4

1 + 1/4 = 1 1/4