Question

Реши задачу . Вычисли и запиши ответ . От одной пристани одновременно в противоположных направлениях отплыли теплоход и катер .Через 2 ч пути расстояния между ними было 120 км . С кокой средней скоростью плыл теплоход , если его скорость была в 2 раза меньше , чем скорость катера ? помогите пж

Answer 1

120:(2x2):3=10 км/ч
Ответ теплоход ехал со скоростью 10 км/ч

Answer 2

Problem Analysis

We are given that a ship and a boat departed from a dock in opposite directions. After 2 hours, the distance between them was 120 km. We need to find the average speed of the ship, given that its speed was half that of the boat.

Solution

Let's assume the speed of the boat is x km/h. According to the problem, the speed of the ship is half that of the boat, so the speed of the ship is x/2 km/h.

To find the average speed, we can use the formula:

Average Speed = Total Distance / Total Time

In this case, the total distance is twice the distance between them after 2 hours, which is 120 km. The total time is the sum of the time it took for the ship and the boat to cover this distance, which is 2 hours.

Let's calculate the average speed using the given values:

Average Speed = (2 * 120 km) / 2 hours

Simplifying the equation:

Average Speed = 120 km / 2 hours

Average Speed = 60 km/h

Therefore, the average speed of the ship is 60 km/h.

Answer

The average speed of the ship is 60 km/h.