Question 834867
You have a starting rate in miles per second.  This is:

{{{10/1000=0.01}}} miles per second.  Showing a rational number with the units,


{{{1(mile)/(100*seconds)}}}


You need to use two conversion ratios.
1 minute = 60 seconds
1 hour = 60 minutes
You use them in the form of ratios.


{{{((1*mile)/(100*seconds))((60*seconds)/(1*minute))((60*minutes)/(1*hour))}}}
{{{highlight(((1*mile)/(100*cross(seconds)))((60*cross(seconds))/(1*cross(minute)))((60*cross(minutes))/(1*hour)))}}}
Note how the conversion factors are arranged to leave units of miles per hour!