Question 114188
Let x=unknown number of miles


{{{40/1=x/1}}} Start with the given ratio



{{{40/1=x/60}}} Write 1 hour as 60 minutes



{{{(40/1)*60=x}}} Multiply both sides by 60



{{{2400/1=x}}} Multiply




So our answer is  {{{x=2400}}} 



So the ratio is 40 mi/1 min = 2400 mi/1h