Question

Из двух пунктов а и Б, расстояние между которыми равно 10 км, одновременно в противоположных направлениях VK ли велосипедист и легковой автомобиль. Через 24 минуты расстояние между ними стало равным 30 км. Найдите скорость велосипедиста,Если известно, что она в четыре раза меньше скорости автомобиля

Answer 1

Они всего прошли 20 км не считаем 10 км что были между ними 1) 20:4 на 4 потому что велосепедист медленей в 4 раза 20:4=5. 5км проехал велосепедист. Формула скорость=время:путь 24мин:5км=4.8 это скорость велосепедиста

Answer 2

Problem Analysis

We have two points A and B, with a distance of 10 km between them. A cyclist and a car start simultaneously from these points in opposite directions. After 24 minutes, the distance between them becomes 30 km. We need to find the speed of the cyclist, given that it is four times slower than the speed of the car.

Solution

Let's denote the speed of the cyclist as v and the speed of the car as 4v (four times the speed of the cyclist).

After 24 minutes, the cyclist has covered a distance of 24/60 * v and the car has covered a distance of 24/60 * 4v.

The total distance covered by both in 24 minutes is equal to the increase in the distance between them, which is 30 - 10 = 20 km.

So, we can set up the equation: 24/60 * v + 24/60 * 4v = 20

Solving for v will give us the speed of the cyclist.

Calculation

Let's solve for v: 24/60 * v + 24/60 * 4v = 20

Simplify the equation: 0.4v + 0.8v = 20 1.2v = 20 v = 20 / 1.2 v = 16.67 km/h

Answer

The speed of the cyclist is 16.67 km/h.