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60km - 1h
20km - xh
x=1/3h
x= 20 minut
Rowerzysta
20km - 1h
20km - x
x=1h = 60minut
60 minut - 20 minut = 40 minut
Odp: Rowerzyście zajęło to więcej o 40 minut.
t=
Samochód
s = 20km
v = 60km/h
t = 20km/60km/h = 20 min
rowerzysta:
s = 20km
v = 20km/h
t = 20km/20km/h= 1h
Rowerzysta jechał 40min dłużej.