**A car travels at 50 km/h for 2 hours and then travels at 80 km/h for 4 hours. What is the average speed of this car?**

## GMAT Prep: Speed, Distance, Time Practice Problem 4

Car A and car B are coming towards each other with the speed of 40 m/s and 50 m/s respectively. How long will it take for both the cars to meet if the distance between them is 900 metres.

## GMAT Prep: Speed, Distance, Time Practice Problem 3

Speed of car A is 40 m/s and speed of car B following car A is 50 m/s. How long will it take for both the cars to meet if the distance between them is 500 metres.