Question

от двух пристаней , расстояние между которыми 120 км одновременно вышли навстечу друг другу два теплохода .Один из них шёл со средней скоростью 22км/ч , другой- 18км/ч . Через сколько часов теплоходы встроетились? Какое расстояние прошел до встречи каждый теплоход?

Answer 1

22+18=40км/ч -общая скорость теплоходов 120:40=3ч Ответ:они встретятся через 3 часа.

Answer 2

Problem Analysis

To solve this problem, we can use the formula: time = distance / speed. We'll calculate the time it takes for the two ships to meet and then use that time to find out how far each ship has traveled.

Calculating Time to Meet

The time it takes for the two ships to meet can be calculated using the formula: time = distance / relative speed.

For the first ship: - Speed = 22 km/h - Distance = 120 km - Relative speed = 22 km/h + 18 km/h = 40 km/h

Using the formula, time = 120 km / 40 km/h = 3 hours.

The two ships will meet in 3 hours.

Calculating Distance Traveled by Each Ship

Now, we can calculate the distance each ship has traveled using the formula: distance = speed * time.

For the first ship: - Speed = 22 km/h - Time = 3 hours

Using the formula, distance = 22 km/h * 3 hours = 66 km.

The first ship traveled 66 km before meeting the second ship.

For the second ship: - Speed = 18 km/h - Time = 3 hours

Using the formula, distance = 18 km/h * 3 hours = 54 km.

The second ship traveled 54 km before meeting the first ship.

So, the first ship traveled 66 km and the second ship traveled 54 km before they met.