Question

решение задачи.турист прошёл 27 км. ранним утром он шёл 2 ч со скоростью 5км/ч, а затем следующие 2 ч -со скоростью 4 км/ч. Остальной путь он прошёл с постоянной скоростью за 3 ч. Чему была равна его скорость на последнем участке пути? Схему ещё напишите.

Answer 1

Ответ: 6 км
20+8+6=21 (км)
21+6=27 (км)

Answer 2

1 действ. (4+5)*2=18 (км) он прошел за 4 часа.
2 действ. 27-18=9 (км) ему осталось пройти.
3 действ.9/3=3 (км) в час была его скорость.
P.S я не знаю как тебе написать схему.

Answer 3

Problem Statement

A tourist walked 27 km. Early in the morning, he walked for 2 hours at a speed of 5 km/h, and then for the next 2 hours at a speed of 4 km/h. He walked the remaining distance at a constant speed for 3 hours. What was his speed on the last part of the journey?

Solution

To find the speed on the last part of the journey, we need to calculate the total distance covered during the first 4 hours and then subtract it from the total distance of 27 km. The remaining distance will be covered in 3 hours, so we can calculate the speed using the formula:

Speed = Distance / Time

Let's calculate the distance covered during the first 4 hours:

Distance covered in the first 2 hours = Speed * Time = 5 km/h * 2 h = 10 km

Distance covered in the next 2 hours = Speed * Time = 4 km/h * 2 h = 8 km

Total distance covered in the first 4 hours = 10 km + 8 km = 18 km

The remaining distance = Total distance - Distance covered in the first 4 hours = 27 km - 18 km = 9 km

Now, we can calculate the speed on the last part of the journey:

Speed = Distance / Time = 9 km / 3 h = 3 km/h

Therefore, the speed on the last part of the journey was 3 km/h.

Diagram

Here is a diagram to illustrate the different parts of the journey:

``` Early morning: 2 hours at 5 km/h --------------------- | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |