Two trains, A and B, of lengths 195 m and 165 m respectively, are running in the same direction on parallel tracks. If the speeds of A and B are 77 km/h and 85 km/h respectively, what is the time (in seconds) taken by them to completely cross each other?

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.