A train of length 239 m takes 20 seconds to pass another train 161 m long coming from the opposite direction. If the speed of the first train is 43 km/hr, then find the speed of the second 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.