Question

Тигра и винно пух пошли в гости к кристофору робину. Сначала тигра поюежал в четыре раза быстрее Винни-Пуха,но, пробежав половину дороги,неожиданно утомился и оставшийся путь прополз со скоростью в два раза меньше скорости Винни-Пуха. Кто раньше всьретится с Кристофором Робинсом, Тигра или Винни-пух?

Answer 1

Пусть вся дорога S, а скорость Винни-Пуха V. Тогда у него уйдёт время t = S/V.
Теперь рассмотрим Тигру. Для первой половины пути верно:
S/2 = 4V*t1
t1 = (S/2) / 4V = S / (8V)
Для второй половины:
S/2 = V/2 * t2
t2 = (S/2)/(V/2) = S/V
Общее время Тигры будет t1+t2 = S/(8V) + S/V. Видно, что правое слагаемое S/V - это и есть t, время Винни-Пуха, а значит у Тигры точно уйдёт больше времени. 

Answer 2

According to the search results, in the given scenario, Tigger would meet Christopher Robin first.

Here's the breakdown of the scenario:

- Tigger starts off by running four times faster than Winnie-the-Pooh. - However, Tigger gets tired after running half of the distance and continues the remaining distance at a speed that is half of Winnie-the-Pooh's speed.

To determine who will meet Christopher Robin first, we can calculate the time taken by each character to cover the entire distance.

Let's assume the distance is represented by "D" and the speed of Winnie-the-Pooh is represented by "W". Therefore, Tigger's initial speed is 4W, and his reduced speed is 0.5W.

The time taken by Tigger to cover the first half of the distance is D/(4W), and the time taken to cover the remaining half of the distance is D/(0.5W).

The total time taken by Tigger is: D/(4W) + D/(0.5W) = (D/4W) + (2D/W) = (D/4W) + (8D/4W) = 9D/(4W)

On the other hand, the time taken by Winnie-the-Pooh to cover the entire distance is D/W.

Comparing the two, we can see that Tigger takes 9/4 times longer than Winnie-the-Pooh to cover the distance.

Therefore, Winnie-the-Pooh will meet Christopher Robin first.

Please note that the above explanation is based on the given scenario and calculations.