Primul biciclist parcurge 2 km in 5 min, adica 2x12 km intr-o ora (5x12 min), deci 72 km in 3 ore. Al doilea biciclist parcurge 500 dam = 5 km in 10 min, adica 5x6 km intr-o ora, deci 90 km in 3 ore. A) Al doilea biciclist castiga cursa. B) Traseul are 90 de km.