Question

Два лыжника вышли одновременно навстречу друг другу из двух населённых пунктов,расстояние между которыми 66км.Скорость первого 12км/ч.второго 10км/ч.Через какое время они встреттятся?

Answer 1

1)12+10=22(км/ч)-скорость сближения.

2)66:22= через 3ч они встреттятся

Answer 2

Problem Analysis

We have two skiers starting simultaneously from two different locations and moving towards each other. The distance between the two locations is 66 km. The first skier has a speed of 12 km/h, while the second skier has a speed of 10 km/h. We need to determine how long 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 skier to cover the distance between them, and then find the time it takes for them to meet by taking the average of the two times.

Let's calculate the time it takes for the first skier to cover the distance: - Distance = 66 km - Speed of the first skier = 12 km/h - Time taken by the first skier = 66 km / 12 km/h = 5.5 hours

Now, let's calculate the time it takes for the second skier to cover the distance: - Distance = 66 km - Speed of the second skier = 10 km/h - Time taken by the second skier = 66 km / 10 km/h = 6.6 hours

To find the time it takes for them to meet, we can take the average of the two times: - Average time = (5.5 hours + 6.6 hours) / 2 = 6.05 hours

Therefore, the two skiers will meet after approximately 6.05 hours.

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