Question

Из двух посёлков расстояние между которыми 68 км одновременно навстречу друг другу направились велосипедист и пешеход. Скорость велосепедиста равна 12 км/ч а скорость пешехода 5 км/.Через сколько времени они встретятся?

Answer 1

1) 12+5=17 км/ч скорость сближения
2) 68:17=4 часа
Ответ: через 4 часа они встретятся.

Answer 2

Нужно сложить их скорости 12+5=17
А затем найти время 68/17=4
Ответ.через 4 часа

Answer 3

Problem Analysis

We are given that the distance between two villages is 68 km. A cyclist and a pedestrian start simultaneously from each village and move towards each other. The cyclist's speed is 12 km/h, and the pedestrian's speed is 5 km/h. We need to find out how long it will take for them to meet.

Solution

To find the time it takes for the cyclist and pedestrian to meet, we can use the formula:

Time = Distance / Speed

Let's calculate the time it takes for each of them to cover the distance between the villages.

The cyclist's time can be calculated as:

Time for cyclist = Distance / Cyclist's speed

Substituting the given values:

Time for cyclist = 68 km / 12 km/h

Using the formula, we can calculate the time for the cyclist to be approximately 5.67 hours.

Similarly, the pedestrian's time can be calculated as:

Time for pedestrian = Distance / Pedestrian's speed

Substituting the given values:

Time for pedestrian = 68 km / 5 km/h

Using the formula, we can calculate the time for the pedestrian to be approximately 13.6 hours.

Since they are moving towards each other, the total time it takes for them to meet is the sum of their individual times:

Total time = Time for cyclist + Time for pedestrian

Substituting the calculated values:

Total time = 5.67 hours + 13.6 hours

Using the formula, we can calculate the total time to be approximately 19.27 hours.

Therefore, it will take approximately 19.27 hours for the cyclist and pedestrian to meet.

Answer

It will take approximately 19.27 hours for the cyclist and pedestrian to meet.