Question

Из одного села одновременно в противоположных направлениях выехали два велосипедиста со скоростью 12 км/ч и 8 км/ч.Через какое время расстояние между ними будет 60 км.

Answer 1

1) 12*60=720 2) 8*60=480 3) 720-480=240 Ответ: 240

Answer 2

1) 12+8=20(км/ч)- скорость удаления .
2)60:20=3(ч)
Ответ- через 3 часа

Answer 3

Problem Analysis

Two cyclists start simultaneously from a village in opposite directions. The first cyclist has a speed of 12 km/h, and the second cyclist has a speed of 8 km/h. We need to determine the time it takes for the distance between them to be 60 km.

Solution

Let's assume that the time it takes for the distance between the two cyclists to be 60 km is t hours.

The distance covered by the first cyclist in t hours is given by the formula: distance = speed * time. Therefore, the distance covered by the first cyclist is 12t km.

Similarly, the distance covered by the second cyclist in t hours is 8t km.

The total distance between the two cyclists is the sum of the distances covered by each cyclist: 12t + 8t = 20t km.

According to the problem, the total distance between the two cyclists is 60 km. Therefore, we can set up the equation: 20t = 60.

To find the value of t, we can solve this equation:

20t = 60 t = 60 / 20 t = 3 hours

Therefore, it will take 3 hours for the distance between the two cyclists to be 60 km.

Answer

The distance between the two cyclists will be 60 km after 3 hours.