In a river, water is flowing with the speed of 2 km/h. A motorboat takes equal time for going 36 km downstream and 30 km upstream. How much time will it take to cover 30 km downstream and 36 km upstream?

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.