1) 0.5*150/2=37.5 km
2) (1.68+3*0.08)/(5+3)=1.92/8=0.24
3) 20*2/(84-80)=40/4=10
4) 240/[(690-240)/45-2]=240/8=30 km/h
5) (60*6)/(60/1.2) -6=360/50-6=7.2-6=1.2
1) 0.5*150/2=37.5 km
2) (1.68+3*0.08)/(5+3)=1.92/8=0.24
3) 20*2/(84-80)=40/4=10
4) 240/[(690-240)/45-2]=240/8=30 km/h
5) (60*6)/(60/1.2) -6=360/50-6=7.2-6=1.2