Question

Решите задачу. Одновременно из двух сел, навстречу друг другу выехали два велосипидиста. Скорость одного 12 км/ч. Скорость другого составляет 0,6 скорости первого. Какое расстояние будет между ними через 2 часа 15 минут.

Answer 1

12*0,6=7,2км/ч скорость второго велосипедиста 

12+7,2=19,2км/ч скорость двух велосипедистов

2ч15мин=2,25ч 

19,2*2,25=43,2км проехали два велосипедиста вместе

х это расстояние между 2 селами

значит х-43,2 это расстояние между велосипедистами через 2ч15мин 

Answer 2

В условии задачи явно не хватате расстояния между селами.

Но задачи бывают разные. Пусть х - расстояние между селами.  

 

(12+12*0,6) -это скорость сближения веловсипедистов. 

(12+12*0,6)*2,25) такое расстояние они проехали со времени начала движения

 

Рисунок, по которому можно составить выражение к задаче, во вложении. 

 

х - (12+12*0,6)*2,25) =х - 43,2 км  такое расстояние осталось между велосипедистами. 

Answer 3

Problem Analysis

We have two cyclists who start simultaneously from two different villages and are heading towards each other. The speed of one cyclist is 12 km/h, while the speed of the other cyclist is 0.6 times the speed of the first cyclist. We need to find the distance between them after 2 hours and 15 minutes.

Solution

To find the distance between the two cyclists, we need to calculate the distance each cyclist has traveled after 2 hours and 15 minutes.

Let's start by converting the time into hours. 2 hours and 15 minutes is equal to 2.25 hours.

The distance traveled by the first cyclist can be calculated using the formula: distance = speed * time.

For the first cyclist: - Speed = 12 km/h - Time = 2.25 hours

Let's calculate the distance traveled by the first cyclist:

Distance1 = Speed1 * Time = 12 km/h * 2.25 hours

Now, let's calculate the distance traveled by the second cyclist. We know that the speed of the second cyclist is 0.6 times the speed of the first cyclist.

For the second cyclist: - Speed = 0.6 * Speed1 - Time = 2.25 hours

Let's calculate the distance traveled by the second cyclist:

Distance2 = Speed2 * Time = (0.6 * Speed1) * 2.25 hours

Finally, the total distance between the two cyclists can be calculated by adding the distances traveled by each cyclist:

Total Distance = Distance1 + Distance2

Let's substitute the values and calculate the total distance:

Total Distance = (12 km/h * 2.25 hours) + ((0.6 * 12 km/h) * 2.25 hours)

Now, let's calculate the total distance:

Total Distance = (27 km) + (16.2 km)

Total Distance = 43.2 km

Therefore, the distance between the two cyclists after 2 hours and 15 minutes is 43.2 km.

Answer

The distance between the two cyclists after 2 hours and 15 minutes is 43.2 km.