Question

Solve: Terry has walked 3 miles. He averages 4 miles an hour. In how many more hours all he have traveled 13 miles?

Answer 1

4----1
13---?
13/4= 3.25 hours. :)

Answer 2

(total # of miles) - (miles already walked) / (miles per hour) = answer

Answer 3

or you could cross multiply them with logic @Kazraka