It takes 10 hours for the passenger car to complete the whole journey, 12 hours for the freight car to complete the whole journey, and 5 hours for the two cars to leave each other How many kilometers is the distance between the two cities It's 50 kilometers in five hours
Laughing martial arts,
50÷(5×1/10-5×1/12)
=50×5÷(1/10-1/12)
=10÷(6/60-5/60)
=10÷1/60
=600 km
A: the two cities are 600 kilometers apart