sama caranya ya.......

5.000 meter/20 menit
1 jam=60 menit
60 menit : 20 menit=3
5000 meter X 3=15.000 meter/jam=15 km/jam

5000 m= 5 km
20 menit = ⅓ jam
Kecepatan = 5 km : ⅓ jam
= 15 km/jam