david biked 16 1 / 3 miles in 2 hours and 20 minutes . what was his average rate of speed in miles per hour ?
d = 16 ( 1 / 3 ) = 49 / 3 t = 2 ( 1 / 3 ) = 7 / 3 s = d / t = 7 answer = a
divide(add(16, const_0_33), add(2, divide(20, const_60)))