Odpowiedzi

2010-03-06T11:35:14+01:00
10,5 km - x
0,5 km - 10 min

10,5 km * 10 min = 0,5 x /*2
210 min = x
x = 3 h 30 min
odp. droga ich trwala 3 h 30 min
2010-03-06T11:37:34+01:00
1 km=1000m
10,5km=10500m
10min----500m
x min----10500m
x=10*10500/500
x=210min

210min=3godz 30min