Question

Один пішохід долає шлях від пункту А до пункту В за 3 год а другий пішохід від пункту В до пункту А за 6 год. Через скільки годин пішоходи зустрінуться якщо вирушать одночасно нізустріч один одному з пункту А і В

Answer 1

Через 2 часа
2й идет в 2 раза медленнее
1й - 1 часть, 2й - 0.5 части

Answer 2

Solution:

To solve this problem, we can use the concept of relative speed. The relative speed of two objects moving towards each other is the sum of their individual speeds.

Let's denote the distance from point A to point B as D. The first pedestrian's speed is D/3 (since they cover the distance in 3 hours), and the second pedestrian's speed is D/6 (since they cover the distance in 6 hours).

When they start walking towards each other, their relative speed is the sum of their individual speeds, which is D/3 + D/6 = D/2.

The time it takes for them to meet can be calculated using the formula: time = distance / speed.

So, the time it takes for them to meet is D / (D/2) = 2 hours.

Therefore, the pedestrians will meet after 2 hours of walking.