Question

От двух пристаней, расстояние между которыми 120 км, одновременно отошли навстречу друг другу два теплохода.Один из них шёл со скоростью 22 км/ч,другой-со скоростью 18 км\ч.Через сколько часов теплоходы встретились?Какое расстояние прошёл до встречи каждый теплоход?(с краткой записей)

Answer 1

Ответ:

22+18=40(км/ч) — их скорость сближения

120:40=3(ч) — через это время они встретились

22*3=66(км) — прошёл первый теплоход

18*3=54(км) — прошёл второй теплоходговое объяснение:

Answer 2

Problem Analysis

We have two ships that are moving towards each other from two different ports. The distance between the ports is 120 km. The first ship is traveling at a speed of 22 km/h, and the second ship is traveling at a speed of 18 km/h. We need to determine how many hours it will take for the ships to meet and the distance each ship has traveled before the meeting.

Solution

To solve this problem, we can use the formula: time = distance / speed. We can calculate the time it takes for each ship to reach the meeting point and then use that time to calculate the distance traveled by each ship.

Let's calculate the time it takes for each ship to reach the meeting point:

Ship 1: - Speed: 22 km/h - Distance: 120 km - Time = Distance / Speed = 120 km / 22 km/h = 5.45 hours

Ship 2: - Speed: 18 km/h - Distance: 120 km - Time = Distance / Speed = 120 km / 18 km/h = 6.67 hours

Since both ships started at the same time, the time it takes for them to meet will be the same for both ships. Therefore, the ships will meet after approximately 5.45 hours.

Now, let's calculate the distance traveled by each ship before the meeting:

Ship 1: - Speed: 22 km/h - Time: 5.45 hours - Distance = Speed * Time = 22 km/h * 5.45 hours = 120 km

Ship 2: - Speed: 18 km/h - Time: 5.45 hours - Distance = Speed * Time = 18 km/h * 5.45 hours = 98.1 km

Therefore, Ship 1 will travel a distance of 120 km before the meeting, and Ship 2 will travel a distance of 98.1 km before the meeting.

Answer

The ships will meet after approximately 5.45 hours. Ship 1 will travel a distance of 120 km before the meeting, and Ship 2 will travel a distance of 98.1 km before the meeting.