Question

Между двумя портами 484 км .Из них одновременно вышли навстречу друг другу два теплохода и встретились через 4 часа после начала движения .Скорость одного теплохода 45 км/ч. Определи скорость другого теплохода .Можно пожалуйста с пояснениями ?

Answer 1

45*4=180км - прошел 1 теплоход
484-180=304км - прошел 2 теплоход
304:4=76 км/ч - скорость 2 теплохода

Answer 2

Problem Analysis

We have two ships that start simultaneously from two ports and meet each other after 4 hours. The speed of one ship is given as 45 km/h. We need to determine the speed of the other ship.

Solution

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

To solve this problem, we can use the formula: Speed = Distance / Time.

The distance covered by the first ship in 4 hours is 45 km/h * 4 h = 180 km.

Since the two ships are moving towards each other, the total distance between them is the sum of the distances covered by each ship. Therefore, the total distance is 484 km.

We can set up the following equation to solve for the speed of the second ship:

180 km + x km * 4 h = 484 km

Simplifying the equation:

180 km + 4x km/h = 484 km

Subtracting 180 km from both sides:

4x km/h = 304 km

Dividing both sides by 4:

x km/h = 76 km/h

Therefore, the speed of the other ship is 76 km/h.

Answer

The speed of the other ship is 76 km/h.