Two trains of lengths 275 meters and 350 meters are moving in the same direction on parallel tracks at speeds of 40 km/h and 90 km/h respectively. How much time will the faster train take to completely cross the slower 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.