Final answer:
The rate of the trains is approximately 2.7083 units per hour.
Step-by-step explanation:
To find the rate of the trains, we need to find their individual speeds. Let's assume the speed of both trains is x.
Train A travels for 212 hours and Train B travels for 4 hours.
Since distance equals speed multiplied by time, we can write the equation 212x + 4x = 585, where 585 represents the total distance between the two stations.
Combining like terms, we get 216x = 585. Dividing both sides by 216, we find that x ≈ 2.7083.
Therefore, the rate of the trains is approximately 2.7083 units per hour.