Arjun has to reach Jaipur which is 602 km away in 22 hours. His starting speed for 7 hours was 29 km/hr. For the next 189 km his speed was 21 km/hr. By what speed must he travel now so as to reach Jaipur in the decided time of 22 hours?

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.