Question

a tractor is moving at a speed of 15 miles per hour what’s the tractors speed in feet per minute

Answer 1

15 mph     5280 ft          1 hr
----------- * ------------- * ------------  = 1320 feet per min.
      1           1 mile           60 min

You might want to make use of the fact that 60 mph = 88 ft/sec. 

Answer 2

1320 feet I HOPE I HELPED :D