Question

Из двух поселков растояние между которыми 54км одновременно навстречу друг другу выехали два велосипедиста.скорость одного 15 км/ч другого-12км/ч.через сколько часов расстояние между ними будет 27 км?

Answer 1

15 км/ч + 12км/ч = 27 (км) - скорость сближения 27 км : 27 км = 1 час

Answer 2

Problem Analysis

We are given that two cyclists start simultaneously from two villages that are 54 km apart and are cycling towards each other. The speed of one cyclist is 15 km/h, while the speed of the other cyclist is 12 km/h. We need to determine how many hours it will take for the distance between them to be 27 km.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it will take for each cyclist to cover the given distances.

For the first cyclist: - Distance = 54 km - 27 km = 27 km - Speed = 15 km/h

Using the formula, we can calculate the time it will take for the first cyclist to cover the distance of 27 km:

Time = 27 km / 15 km/h

For the second cyclist: - Distance = 27 km - Speed = 12 km/h

Using the formula, we can calculate the time it will take for the second cyclist to cover the distance of 27 km:

Time = 27 km / 12 km/h

Let's calculate the time for each cyclist.

Calculation

For the first cyclist: Time = 27 km / 15 km/h = 1.8 hours

For the second cyclist: Time = 27 km / 12 km/h = 2.25 hours

Answer

Therefore, it will take approximately 1.8 hours for the first cyclist and 2.25 hours for the second cyclist to cover the distance of 27 km.