If jack was traveling at 100 miles in 2 hours what was his speed in miles per minute?

Speed = (distance) / (time)

Speed = (100 mi/2 hr)

Multiply by a fraction equal to 1:

Speed = (100 mi/2 hr) x (1 hr/60 min)

Speed = (100 x 1 / 2 x 60) (mi-hr/hr-min)

Speed = (100 / 120) (mi / min)

Speed = 5/6 mi/min

Speed = 0.833 ... mi/min