A train P running at 50 km/h crosses a person moving at 14 km/h in the same direction in 27 seconds. How much time (in seconds) will the train P take to cross a 280 m long train Q running at 40 km/h in the opposite direction?

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.