Odpowiedź:
V=s/t /*t
tv=s /:v
t=s/v
s=15km
v=60 km/h
t=15/60=0.25h czyli 15 min
b) 2*15=30 min
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Odpowiedź:
V=s/t /*t
tv=s /:v
t=s/v
s=15km
v=60 km/h
t=15/60=0.25h czyli 15 min
b) 2*15=30 min