The Gulf of Tonkin Incident, in 1964, was a major turning point in United States military involvement in Vietnam. The Gulf of Tonkin Incident occurred in August 1964.
It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the car is: