Respuesta :

zackd
( 3 yards / sec )*( 3 ft / yd )*( mile / 5,280 ft )*( 60 sec / min )*( 60 min / hr ) = miles / hr
3*3*(1/5280)*60*60=9*3600*(1/5280)
32400/5280=6.136

 the runs 6.136 mi/hr