Question 1200109
he rode 9 miles in 1.5 hours.
his rate was 9/1.5 = 6 miles per hour.
he continued at the same rate for a another half hour at 6 miles per hour = .5 * 6 = 3 miles.
the total distance traveled was 9 + 3 = 12 miles.
at 6 miles per hour, the trip took 12/6 = 2 hours.
he rode 9 miles for the first 1.5 hours and 3 miles for the last .5 hours.