A train takes a certain time to cover a distance at a uniform speed of 70 km/h. If the train runs at a speed of 65 km/h, it takes 42 minutes more than before. What is the distance (in km) covered by 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.