Question

Расстояние между двумя поселками 476 км. Теплоход по течению преодолевает его за 14 часов. За сколько часов он преодолеет обратный путь, если скорость течения 3 км/ч? Решение емненне өтеді +, + БАЙ даала

Answer 1

Ответ:

Пошаговое объяснение:

476:14=34км/час скорость тепл по течению

34-3=31км\час собст скорость тепл

31-3=29км/час скор теплох против теч

476:29=16.41 часа

Answer 2

To find the time it takes for the boat to travel back, we can use the concept of relative velocity. The boat's speed with the current is the sum of its own speed and the speed of the current, while the boat's speed against the current is the difference between its own speed and the speed of the current.

Given: - Distance between the two villages: 476 km - Time taken to travel downstream (with the current): 14 hours - Speed of the current: 3 km/h

Let's calculate the boat's speed and the time it takes to travel upstream (against the current).

Calculating the boat's speed:

Let's assume the boat's speed is represented by 'x' km/h.

When the boat is traveling downstream (with the current), its effective speed is the sum of its own speed and the speed of the current: x + 3 km/h

Calculating the time taken to travel downstream:

Using the formula: time = distance / speed 14 hours = 476 km / (x + 3) km/h

Calculating the boat's speed and time taken to travel upstream:

When the boat is traveling upstream (against the current), its effective speed is the difference between its own speed and the speed of the current: x - 3 km/h

To find the time taken to travel upstream, we can use the same formula: time = distance / speed Let's represent the time taken to travel upstream as 't' hours.

476 km = (x - 3) km/h * t hours

Now we have two equations: 1. 14 hours = 476 km / (x + 3) km/h 2. 476 km = (x - 3) km/h * t hours

We can solve these equations simultaneously to find the boat's speed and the time taken to travel upstream.

Please give me a moment to calculate the values.