Answer:
To calculate 80 minutes from 1 hour and 5 minutes, you can add the minutes together and then convert any extra minutes into hours if needed.
Step-by-step explanation:
Add the minutes together: 5 minutes (from 1 hour and 5 minutes) + 80 minutes = 85 minutes.
Since there are 60 minutes in an hour, you need to convert the extra 85 minutes into hours and minutes.
Divide 85 by 60 to get the number of hours: 85 / 60 = 1 hour and 25 minutes.
So, 1 hour and 5 minutes plus 80 minutes equals 2 hours and 25 minutes in total.