[800rev/min][60min/1hr][2π(21)in/1rev][1ft/12in][1mile/5280ft]

= 100mi/hr

Mark M.

tutor

Yes. Multiply all of the numerators together and divide by the product of all the denominators. Notice how some of the units cancel as you move from left to right, so that all that remains at the end is miles in the numerator and hours in the denominator.

Mark M (Bayport, NY)

Report

01/12/17

Rachel E.

01/12/17