Question

От двух гаваней одновременно отошли навстречу друг другу два теплохода. Скорость одного теплохода 30,5 км/ч. Через 6 часов они(теплоходы) встретились. Определите скорость второго теплохода, если расстояние между гаванями 396 км. СРОЧНО!!!!

Answer 1

30,5 • 6 = 183 км проплыл 1-й
396 - 186 = 213 км проплыл 2-й
213 : 6 = 35,5 км/ч скорость 2-го

Answer 2

Пусть V скорость второго теплохода, тогда (30,5 + V) их скорость сближения

(30,5 + V) * 6 = 396        - записываем условие задачи в уравнение
30,5 + V = 396 : 6          - обе части уравнения делим на 6
30,5 + V = 66            - это скорость сближения теплоходов
V = 66 - 30,5        - переносим число в другую часть уравнения, меняя знак
V = 35,5               - вычисляем скорость второго теплохода

Ответ: скорость второго теплохода 35,5 км/ч

Answer 3

Problem Analysis

We have two ships that start from two different harbors and travel towards each other. The speed of one ship is given as 30.5 km/h, and after 6 hours, they meet each other. We need to determine the speed of the second ship.

Solution

Let's assume the speed of the second ship is x km/h.

We know that the distance between the harbors is 396 km, and the time it takes for the ships to meet is 6 hours.

Using the formula distance = speed × time, we can set up the following equation for the first ship:

30.5 km/h × 6 hours = 183 km

For the second ship, we can set up the equation:

x km/h × 6 hours = 396 km - 183 km = 213 km

Now we can solve for x by dividing both sides of the equation by 6:

x km/h = 213 km / 6 hours = 35.5 km/h

Therefore, the speed of the second ship is 35.5 km/h.

Answer

The speed of the second ship is 35.5 km/h.

Verification

Let's verify the answer using the given information.

The first ship travels at a speed of 30.5 km/h for 6 hours, covering a distance of 183 km. The second ship travels at a speed of 35.5 km/h for 6 hours, covering a distance of 213 km. The sum of these distances is indeed equal to the total distance between the harbors, which is 396 km.

Therefore, the answer is verified.