Question

Дорога между пунктами A и B состоит из подъёма и спуска, а её длина равна 8 км. Турист прошёл путь из A в B за 5 часов.Время его движения на спуске составило 1 час. С какой скоростью турист шёл на спуске, если скорость его движения на подъёме меньше скорости движения на спуске на 3 км / ч ?

Answer 1

Находим среднюю скорость пешехода: 8км:5ч=1,6(км/ч). Пусть скорость на подъёме - х, тогда скорость при спуске - 3х. Составляем уравнение: х+3х=1,6 ; 4х=1,6; х=1,6:4; х=0,4 (скорость на подъёме); 3х0,4=1,2 (скорость на спуске).

Answer 2

Calculation of the Tourist's Speed on the Descent

To calculate the speed at which the tourist descended, we need to gather some information from the given problem statement.

The road between points A and B consists of an ascent and a descent, with a total length of 8 km. The tourist completed the journey from A to B in 5 hours, with 1 hour spent on the descent. The speed of the tourist on the ascent is lower than the speed on the descent by 3 km/h.

Let's break down the problem and calculate the speed of the tourist on the descent.

1. Calculate the time spent on the ascent: - Total time taken: 5 hours - Time spent on the descent: 1 hour - Time spent on the ascent: Total time - Time spent on the descent = 5 hours - 1 hour = 4 hours

2. Calculate the distance covered on the ascent: - Total distance: 8 km - Distance covered on the descent: 0 km (since the descent is separate from the ascent) - Distance covered on the ascent: Total distance - Distance covered on the descent = 8 km - 0 km = 8 km

3. Calculate the speed on the ascent: - Speed = Distance / Time - Speed on the ascent = Distance covered on the ascent / Time spent on the ascent = 8 km / 4 hours = 2 km/h

4. Calculate the speed on the descent: - Speed on the descent = Speed on the ascent - 3 km/h = 2 km/h - 3 km/h = -1 km/h

Based on the calculations, we find that the speed of the tourist on the descent is -1 km/h. However, it is important to note that a negative speed does not make sense in this context. It is likely that there is an error in the problem statement or the given information. Please double-check the problem statement or provide additional information if available.

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