Question

Велосипедист и пешеход одновременно начали движение из пункта А в пункт B. Когда велосипедист приехал в пункт B, пешеходу осталось пройти две трети всего пути. Когда пешеход пришёл в пункт B, велосипедист уже ждал его там полчаса. Сколько минут ехал велосипедист из пункта А в пункт B?

Answer 1

Ответ:

За то время, которое заняла у велосипедиста дорога из А в B, пешеход прошёл треть пути. Значит, скорость велосипедиста в 3 раза больше скорости пешехода, а время, которое он затратил на всю дорогу, в 3 раза меньше. Полчаса составляют две трети времени движения пешехода. Значит, пешеходу на дорогу потребовалось 45 минут, а велосипедисту — 15 минут.

Ответ: 15 мин.

Answer 2

Calculating the Time the Cyclist Spent Traveling from A to B

To calculate the time the cyclist spent traveling from point A to point B, we can use the information provided in the question and apply some basic mathematical reasoning.

Let's denote the total distance from point A to point B as D. According to the given information: - When the cyclist arrived at point B, the pedestrian had two-thirds of the distance left to cover. - When the pedestrian arrived at point B, the cyclist had been waiting for them for half an hour.

We can use these pieces of information to calculate the time the cyclist spent traveling from point A to point B.

Let's denote the time the cyclist spent traveling as T.

Using the given information, we can set up the following equation: D - 2/3D = T * 0.5

Solving for T will give us the time the cyclist spent traveling from point A to point B.

Calculation

The time the cyclist spent traveling from point A to point B can be calculated using the equation: D - 2/3D = T * 0.5

Solving for T: 1/3D = T * 0.5

T = (1/3D) / 0.5

This gives us the time the cyclist spent traveling from point A to point B.

Conclusion

The time the cyclist spent traveling from point A to point B can be calculated using the equation T = (1/3D) / 0.5. Solving for T will provide the answer to the question.