Respuesta :

Answer: 40km/h

Step-by-step explanation:

distance = 20km

time = 30 min conver to hours. [tex]30min(\frac{1h}{60min})=0.5h[/tex]

velocity = ?

[tex]d=v*t\\v=\frac{d}{t}[/tex]

[tex]v=\frac{20}{0.5} \\v=40km/h[/tex]