Respuesta :

AL2006

(75 miles / 3 hours) x (5280 feet / 1 mile) x (1 hour / 60 minutes)

= [ (75 x 5280 x 1) / (3 x 1 x 60) ] (mile-feet-hour/hour-mile-minute)

= (396,000 / 180) feet/minute

= 2,200 feet/minute