The two cars are traveling in opposite directions, so the distance between them increases by the sum of their speeds.

• Car A travels at 50 mph.
• Car B travels at 60 mph.

After 3 hours:

• Distance covered by Car A = $50 \, \text{mph} \times 3 \, \text{hours} = 150 \, \text{miles}$.
• Distance covered by Car B = $60 \, \text{mph} \times 3 \, \text{hours} = 180 \, \text{miles}$.

Now, since they are traveling in opposite directions, the total distance between them is the sum of these distances:

$\text{Total distance} = 150 \, \text{miles} + 180 \, \text{miles} = 330 \, \text{miles}$

So, after 3 hours, the cars are 330 miles apart.

Would you like more details or have any questions?

---

Here are 5 related questions:

1. What if Car A traveled at 40 mph instead of 50 mph?
2. How far apart would they be after 5 hours?
3. If they started 10 miles apart, how would the result change?
4. What if Car B traveled for 4 hours and Car A for only 3 hours?
5. How would their distance change if both cars slowed down by 10 mph after 1 hour?

Tip: When two objects move in opposite directions, you can find the total distance by adding their individual distances.