Answer:
19 1/2 miles
Explanation:
We know that Jerry can bicycle 6 and 1/2 mile in 1/3 of an hour.
We also know that 1/3+1/3+1/3= 1
That means that 3 times the amount of time it takes him in 1/3 of an hour will be the amount of time it takes him in 1 whole hour.
So we can set up an equation like this:
(Number of miles he can bicycle in 1/3 of an hour) x 3 = (How far he can bicycle in 1 hour)
Plug in your numbers:
6 1/2 x 3 = 19 1/2