400m= 0.4km
0.4km:4km/h= 0.1h- tyle czasu idzie
1h=60min
0.1h=6min
Marek z domu wychodzi o 7.44
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400m= 0.4km
0.4km:4km/h= 0.1h- tyle czasu idzie
1h=60min
0.1h=6min
Marek z domu wychodzi o 7.44