Car A left from a point P at 11:00 am at a speed of 55 km/hr. Car B left from P in the same direction as Car A at 11:36 am at a speed of 'x' km/hr. If Car B travelled 275 km before it overtook Car A, what is the value of x? (Assume both cars travelled at constant speeds)

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.