Final answer:
The two cars will meet in 6 hours.
Step-by-step explanation:
To calculate how soon the two cars will meet, we can use the formula:
Time = Distance / Relative Speed
Since the cars are driving towards each other, their relative speed is the sum of their individual speeds:
Relative Speed = Speed of Car 1 + Speed of Car 2
So, the time it will take for the two cars to meet is:
Time = 300 miles / (20 mph + 30 mph)
Time = 300 miles / 50 mph = 6 hours
Therefore, the two cars will meet in 6 hours.