Answer:
70 km/h
Step-by-step explanation:
A car is travel 210 km in 3 hours.
Distance, d = 210 km
Time, t = 3 hours
We can find the speed of the car. The speed of an object is equal to the total distance divided by time taken.
v = d/t
Substitute the values,
[tex]v=\dfrac{210\ km}{3\ h}\\\\v=70\ km/h[/tex]
So, the required speed of the car is 70 km/h.