Distance Covered by Yura and Kostya

1. Yura's planned route: 300 meters
2. Yura's progress: 5/6 of the route (5/6 * 300 = 250 meters)
3. Kostya joins Yura's route
4. Total distance covered by Yura and Kostya together:

Calculation: Yura's progress + Kostya's progress = Total distance covered 250 meters + (1/6 * 300) meters = Total distance covered

Explanation: Since Kostya joined Yura after he had already covered 5/6 of the route, Kostya's progress will be 1/6 of the total route length (300 meters). Therefore, Kostya's progress is (1/6 * 300) meters.

Now, we can calculate the total distance covered by Yura and Kostya together by adding Yura's progress (250 meters) and Kostya's progress ((1/6 * 300) meters).

Answer: The total distance covered by Yura and Kostya together is 250 meters + (1/6 * 300) meters.