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2 min = 1/30 godziny
V=s÷t
V=3÷1/30
V=3×30
V=90 [km/h]
2.
1 min = 1/60 godziny
s=V×t
s=12×1/60
s=0,2 [km] = 200 [m]
3.
Kowalski: V=120÷2=60[km/h]
Nowak: V=200÷3=66 i 2/3 [km/h]
66<66,6666...
4.
osobowy: t=240÷80=3[h]
dostawczy: t=180÷60=3[h]
3=3
5.
Jola: s=60×3/4=45[km]
Aniela: s=25×1/2=12,5[km]
45>12,5