Arun driven a car and covers a certain distance in 6 hours at a speed of 50 kmph. By what percent should the speed of the Arun car be increased to cover the same distance in 4 hours ?

A sales agent travels a distance of 50 km in 2 hours and 30 minutes. How much faster, in kilometres per hour, on average, must he travel to make such a trip in 5/6 hours less time?

A train running at a speed 360 km/hr passes a platform with double length in 30 sec. Find the length of platform.

Two trains of equal length are running from the same origin on parallel tracks in the same direction, at the speeds of 58 km/hr and 73 km/hr, respectively. The faster train passes the other train in 144 seconds. What is the length (in meters) of each train?

'A' rides a cycle at an average speed of 30 km/h and reaches the destination in 6 hours. B covers the same distance in 4 hours. If A increases the average speed by 10 km/h and B increases the average speed by 5 km/h What would be the difference in their time taken to reach the destination ?

Ananyaa travels a certain distance at a speed of 3 kmph and reaches her destination late by 15 minutes. If she travels at a speed of 4 kmph, she reaches her destination 15 minutes earlier. Find the distance that Ananyaa is traveling to reach her destination.

On a journey of 300 km, a person travels the first 100 km at the speed of 40 km/hour, the next 50 km at the speed of 60 km/hour and the last 150 km at the speed of 50 km/hour. What is his average speed (in km/hour) for the entire journey?