Question

От двух пристаней реки одновременно отошли навстречу друг другу катер и лодка.Они встретились через 5 часов.Скорость лодки-8 км/ч а скорость катера-в 4 раза больше.Чему равно расстояние между пристанями?​

Answer 1

Ответ:

200км

Пошаговое объяснение:

1. 8*4=32 км/ч скорость катера.

2. 32+8=40 км/ч суммарная скорость катера и лодки за 1 час друг на встречу другу.

3. 40км/ч*5ч=200 км - расстояние между пристанями.

Answer 2

Problem Analysis

We are given that a boat and a motorboat started from two different points on a river simultaneously and met each other after 5 hours. The speed of the boat is 8 km/h, and the speed of the motorboat is 4 times greater. We need to find the distance between the two points.

Solution

Let's assume the speed of the motorboat is x km/h. According to the problem, the speed of the boat is 8 km/h, and the speed of the motorboat is 4 times greater, so the speed of the motorboat is 4x km/h.

We know that distance = speed × time. The boat and the motorboat traveled for the same amount of time, which is 5 hours. Therefore, the distance traveled by the boat is 8 × 5 = 40 km, and the distance traveled by the motorboat is 4x × 5 = 20x km.

Since the boat and the motorboat started from two different points and met each other, the sum of the distances traveled by both of them should be equal to the total distance between the two points.

So, we can write the equation: 40 + 20x = total distance

To find the value of x, we need more information or an additional equation. Without that, we cannot determine the exact value of the total distance between the two points.

Therefore, we cannot determine the exact distance between the two points without additional information.

Please let me know if there is anything else I can help you with.