(a) 8am to 9am(b) 9am to 10am (c) 10am to 11am (d) 11am to 12am ANSWER 1. 4 units = 1 hour. 2. The person took hours for the travel. 3.It was 22 km far from the town. 4. Yes 5. He rode the fastest between 8 am and 9 am. 2