Randy walks 1/2 mile in each 1/5 hour. how far will randy walk in one hour

In the given problem, it is already given that Randy can walk for a distance of 1/2 a mile in 1/5 of an hour. Now let us first convert 1/5 hour to minutes. this will make the problem a bit easy.
1/5 hour = 1/5 * 60 minutes
               = 12 minutes
So
Randy in 12 minutes can walk for a distance of = 1/2 mile
Then
In 60 minutes Randy can walk for a distance of = [1/(2*12)] * 60
                                                                             = (1/24) * 60
                                                                              = 2.5
So Randy can walk 2.5 miles in 1 hour.