Question

Из одного посёлка одновременно выехали два всадника в противоположном направлении скорость первого 20 км в час скорость второго 30 км в час через сколько часов расстояние между ними будет 300 км

Answer 1

30+20=50(км в час)
300:50=6(часов)
Ответ: через 6 часов 

Answer 2

300:(20+30)=6 через часов будет расстояние между ними 300 км 

Answer 3

Problem Analysis

We are given that two riders leave a village simultaneously in opposite directions. The first rider has a speed of 20 km/h, and the second rider has a speed of 30 km/h. We need to determine how many hours it will take for the distance between them to be 300 km.

Solution

To solve this problem, we can set up an equation based on the relative speeds of the two riders. Let's assume that it takes x hours for the distance between them to be 300 km.

The first rider travels at a speed of 20 km/h, so in x hours, the first rider will have traveled a distance of 20x km.

Similarly, the second rider travels at a speed of 30 km/h, so in x hours, the second rider will have traveled a distance of 30x km.

Since they are traveling in opposite directions, the total distance between them will be the sum of the distances traveled by each rider:

20x + 30x = 300

Simplifying the equation:

50x = 300

Dividing both sides by 50:

x = 6

Therefore, it will take 6 hours for the distance between the two riders to be 300 km.

Answer

It will take 6 hours for the distance between the two riders to be 300 km.