Two trains, one from station P to Q and the other from station Q to P, start simultaneously with speeds of 80 km/h and 95 km/h respectively. If they meet after 12 hours, what is the difference between the distances covered by the two trains?

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.