well you know thatit takes 60 mins to go 3.7miles
theres a few different ways to solve this one is by percentage since 2.5miles is less than 3.7 you can see how much percent 2.5 is of 3.7.
take that number and multiply it by the total minutes 60
minutes
if u dont like percents then u can do comparissons with a variable
if you dont like either of those choices u could find out how many minutes per mile.
mins