A train covers the first 5 km of its journey at a speed of 30 km/hr and the next 15 km at a speed o
Channel: Doubtnut
Date: 2020-02-02

A train covers the first 5 km of its journey at a speed of 30 km/hr and the next 15 km at a speed of 45 km/hr. What is the average speed of the train?