120 km ... 2 hours
300 km ... x hours = ?
If you would like to know how long will it take the car to travel 300 km, you can calculate this using the following steps:
120 * x = 300 * 2
120 * x = 600 /120
x = 600 / 120
x = 5 hours
Result: The car will travel 300 km in 5 hours.