Jim ran 12 1/2 miles in 2 1/2 hours. How many hours for 1 mile?

1/5 hours i. e 0.2 hours (which is 12 mins)

Step-by-step explanation:

First note that 12 1/2 = 12.5, and 2 1/2 = 2.5.

To work out how many hours it takes hime to drive one mile, we divide the number of hours (2.5) by the number of miles (12.5),

i. e 2.5 : 12.5

which equals 1/5 = 0.2 hours ( = 12 mins).