Two trains of lengths 112 m and 108 m are running towards each other on parallel tracks with speeds of 45 km/h and 54 km/h respectively. How long will it take for them to cross each other after they meet?

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.