Two pedestrians left at the same time in one direction from two villages, the distance between which is 6 km.

Two pedestrians left at the same time in one direction from two villages, the distance between which is 6 km. The speed of the first is 4 km / h, the second is 6 km / h. How many hours the second will catch up with the first.

1. Let’s take as x the time during which a pedestrian moving with a higher speed will catch up with another pedestrian.

2. During this time, the first pedestrian will cover 6 kilometers, the other 4 kilometers.

3. Let’s compose the equation:

6x = 4x + 6;

2x = 6;

x = 3 hours.

Answer: A pedestrian moving at a higher speed will catch up with another pedestrian 3 hours after they leave their villages.