make label units cancel out until you get the units asked for....
(.25mi/25s)(3600s/h)=36mi/h
I have no idea what those clowns used....none of the 36mph answers equal the fraction they have set up next to them :P
So don't feel bad, those "answers" confuse me too, because they are wrong. (at least when dealing with the fractions that they set up)
