If I leave at 11:00 and I came back at 2:30 how many hours is that?

3 hours and 30 minutes

Step-by-step explanation:

So what we first want to do is find the gap between 11:00 〜 12:00 and

12:00 〜 2:30.

So the gap between 11:00 and 12:00 is 1 hour because if you take a hour away from 12:00 it will become 11:00.

Then we want to find the gap between 12:00 and 2:30 which is pretty easy because you just do the equation 2:30 - ? = 12:00. Then the answer is 2:30.

Now we found our two numbers, 1:00 and 2:30 we add them together (1:00 + 2:30) which makes 3:30.

That's why the answer is 3 hours and 30 minutes.

11 to 11 is 12 hours

11 to 2.30 is3.30 hrs

Ans is 15.30 hrs