Given :
Distance travelled , d = 180 miles.
Time taken , t = 4 hours.
To Find :
Speed in feet per minutes.
Solution :
Distance in feet is , d = 180×5280 = 950400 feet.
Time taken , t = 4×60 = 240 minutes.
Speed is given by , [tex]s=\dfrac{Distance}{Time \ Taken}[/tex]
[tex]S=\dfrac{950400}{240}\ ft/min\\\\S=3960\ ft/min[/tex]
Hence, this is the required solution.