A passenger train covers 240 km in 4 hours. the fast train runs at a speed of 90 km / h.

A passenger train covers 240 km in 4 hours. the fast train runs at a speed of 90 km / h. How many kilometers per hour does a fast train travel more than a passenger train?

This task is not difficult. To answer the question of the problem, you need to know how many kilometers per hour a passenger train travels. From the condition of the problem, the distance and time for which the passenger train travels this distance is known.
1. Find out how fast a passenger train is going.
240/4 = 60 kilometers per hour.
2. Find out how many kilometers per hour a fast train travels more than a passenger train.
90-60 = 30 kilometers per hour.
Answer: A fast train travels thirty kilometers per hour more per hour than a passenger train.