or, you can remember the fact that 60 mph = 88 ft/sec and use a ratio ...
minute has seconds
so minutes has seconds.
So the ratio is -
Both are divisible by hence divide both sides by to get the ratio in it simplest form.
EDIT: Create new thread for new question because some people might not check thread thinking it is answered. So, rather than waiting, create a new thread (It's also a forum rule #15: Rules).