The answer would be 120 minutes.
If one is going 12 miles per hour, they would cover 24 miles in two hours since 12×2=24. Since the question asks for the answer in minutes, 2 hours would have to be converted to minutes.
There are 60 minutes in an hour, so multiplying that by two would give you the amount of minutes in two hours.
60 minutes×2=120 minutes
120 minutes=2 hours
