Question

От одной пристани одновременно в противоположных направлениях отправились катер и моторная лодка.Скорость катера 18км,ч,а лодки 25км,ч.Какое расстоян будет между ними через 4 часа?

Answer 1

Я бы сказал, что предыдущий не верен. Правильно так:
18•4=72
25•4=100
100-72=28 (км)
Ответ: 28 км

Answer 2

1)18+25=43
2)43×4=172

Answer 3

Problem Analysis

We are given the speeds of a boat and a motorboat, and we need to find the distance between them after 4 hours.

Solution

To find the distance between the boat and the motorboat after 4 hours, we need to calculate the distance each of them has traveled.

Let's start by calculating the distance the boat has traveled. The boat's speed is given as 18 km/h, and it has traveled for 4 hours. Therefore, the distance traveled by the boat is:

Distance of the boat = Speed of the boat × Time = 18 km/h × 4 h = 72 km.

Next, let's calculate the distance the motorboat has traveled. The motorboat's speed is given as 25 km/h, and it has also traveled for 4 hours. Therefore, the distance traveled by the motorboat is:

Distance of the motorboat = Speed of the motorboat × Time = 25 km/h × 4 h = 100 km.

Now that we have calculated the distances traveled by both the boat and the motorboat, we can find the distance between them. Since they are traveling in opposite directions, the distance between them is the sum of their distances:

Distance between the boat and the motorboat = Distance of the boat + Distance of the motorboat = 72 km + 100 km = 172 km.

Therefore, the distance between the boat and the motorboat after 4 hours is 172 km.

Answer

The distance between the boat and the motorboat after 4 hours is 172 km.

References

- Source: ' ...' - Snippet: ```Dec 5, 2019 ... 18 /, 25 /. 4 ? . 1.```