लुईस यात्रा का पहला भाग 430 मील प्रति घंटे की गति से और दूसरा समान भाग 645 मील प्रति घंटे की गति से तय करता है। पूरी यात्रा के लिए उसकी औसत गति क्या है? (मील प्रति घंटे में)

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.