Respuesta :

Greetings!

11:00-12:00= 1 hours
12:00-1:00= 2 hours
1:00-2:00
= 3 hours
2:00-3:00
= 4 hours
3:30-3:30
= 4 1/2 hours

There are 4 and 1/2 hours between 11:00 and 3:30

Hope this helps.
-Benjamin