Answer:
12 1/2 mins
Explanation:
If the teacher has 47 1/2 minutes left, and there are 60 minutes in an hour, all you have to do is 60-47.5 which is 12.5. To change this into a mixed number, we know 5 is half of 10, so it is 12 1/2 minutes. Hope this helped.
60-47 1/2
60-47.5=12.5
12.5= 12 1/2