Final answer:
Lee would take 16 minutes longer to walk to school than ride on a bike. The correct answer is a) 16 minutes.
Step-by-step explanation:
Lee can ride to school at a speed of 200m/min and walk at an average speed of 100m/min. The distance between Lee's school and home is 3,200 m.
To find out how much longer Lee would take to go to school on foot, we need to compare the time it would take for him to ride to school and the time it would take for him to walk to school.
Time taken to ride to school = Distance / Speed = 3,200 m / 200 m/min = 16 min
Time taken to walk to school = Distance / Speed = 3,200 m / 100 m/min = 32 min
Therefore, Lee would take 32 - 16 = 16 minutes longer to go to school on foot than by bike.
Therefore, the correct answer is a) 16 minutes.