Question

Ile to km/h
10km w 14 minut
15km w 18minut
15km w 45 minut
7.5km w `15minut
7.5km w 20 minut

Answer 1

10/14 [km/min]=(10*60)/14 [km/h]=300/7[km/h]
15/18[km/min]=5/6[km/min]=(5*60)/6[km/h]=50[km/h]
15/45[km/mjn]=1/3[km/min]=1/3*60[km/h]=20[km/h]
7,5/15[km/min]=1/2[km/min]=1/2*60[km/h]=30[km/h]
7,5/20[km/min]=(7,5/20)*60[km/h]=3*7,5[km/h]=22,5[km/h]