Determine the quotient: 2 4 7 ÷ 1 3 6 . 2. One lap around a dirt track is 1 3 mile. It takes Bryce 1 9 hour to ride one lap. What is Bryce’s unit rate, in miles, around the track? 3. Mr. Gengel wants to make a shelf with boards that are 1 1 3 feet long. If he has an 18-foot board, how many pieces can he cut from the big board?