Question

Два велосипедиста выехали одновременно навстречу друг другу Из двух пунктов расстояние между которыми 36 километров скорость первого 10 км/ч а второго 8 км/ч через сколько часов они встретятся

Answer 1

Чтобы найти время расстояние разделить на сумму скорость первого и второго    36/(10+8)=2   Ответ через 2 часа

Answer 2

Problem Analysis

Two cyclists start simultaneously from two different points and are moving towards each other. The distance between the two points is 36 kilometers. The first cyclist has a speed of 10 km/h, while the second cyclist has a speed of 8 km/h. We need to determine how many hours it will take for them to meet.

Solution

To solve this problem, we can use the formula: time = distance / speed. We can calculate the time it takes for each cyclist to cover the distance between them, and then find the time it takes for them to meet by taking the maximum of the two times.

Let's calculate the time it takes for each cyclist to cover the distance:

- For the first cyclist: time1 = distance / speed1 = 36 km / 10 km/h. - For the second cyclist: time2 = distance / speed2 = 36 km / 8 km/h.

Now, let's find the maximum of the two times to determine the time it takes for them to meet:

- time = max(time1, time2).

Let's calculate the values:

- For the first cyclist: time1 = 36 km / 10 km/h = 3.6 hours. - For the second cyclist: time2 = 36 km / 8 km/h = 4.5 hours.

Since the second cyclist takes more time to cover the distance, we can conclude that they will meet after 4.5 hours.

Answer

The two cyclists will meet after 4.5 hours.

Explanation

When two cyclists start simultaneously from two different points and move towards each other, the time it takes for them to meet can be calculated by dividing the distance between them by the sum of their speeds. In this case, the distance between the two points is 36 kilometers, and the speeds of the first and second cyclists are 10 km/h and 8 km/h, respectively. By dividing the distance by the sum of their speeds, we find that it takes the first cyclist 3.6 hours to cover the distance and the second cyclist 4.5 hours to cover the distance. Since the second cyclist takes more time, they will meet after 4.5 hours.