A train takes 34 seconds to pass a signal post situated at one end of a 473-meter-long bridge. If the train takes 77 seconds to completely cross the bridge, what is the length of the train?

Ramesh covers 56 part of the total distance by bus and the remaining 36 km by car. What is the total distance of his journey?

A person covers a distance of L km in 12 hours. If he increases his speed by 10 m/s, he covers the same distance in 8 hours. Which of the following statements is/are correct? I. The value of L is 760 km. II. The original speed of the person is 72 km/h.