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1000m=1km
2,5min=1/24 h
zatem: 1 podzielic przez 1/24. Jest to to samo co 1*24 czyli odpowiedz to 24km/h
2)
1000m=1km
2min=1/30h
odp. 30km/h
3)
1000m=1km
3min 45 sec = 1/16 h
odp. 16 km/h