Question

ребят, помогите со 2ым и 3им

Answer 1

S=75t
S(3)=75*3=225 km
S(3.5)=75*3.5=262.5 km
S(6)=75*6=450 km

S=375
375=75t
t=375/75=5 ч

2) S=V*t
S=6*V
S=6*85=510 km

510=6*V
V=510/6=85 км/ч