Răspuns :
450 km...........10 ore
x ....................2 ore
x = 450* 2/10 = 900/10 = 90 km
450 km..................10 ore
x ...........................5 ore
x = 450 * 5/10 = 2250/10 = 225 km
x ....................2 ore
x = 450* 2/10 = 900/10 = 90 km
450 km..................10 ore
x ...........................5 ore
x = 450 * 5/10 = 2250/10 = 225 km