Question

Велосипедист движется со скоростью на 10 км/ч большей, чем пешеход. На один и тот же путь велосипедисту требуется 2 ч, а пешеходу - 7 ч. Найдите скорости велосипедиста.

Answer 1

2(x+10)=7x
2x+20=7x
20=7x-2x
20=5x
x=20:5
x=4км/ч скорость пешехода
10+4=14км/ч скорость велосипедиста

Answer 2

Calculation of the Cyclist's Speed

To find the speed of the cyclist, we can use the formula:

Speed = Distance / Time

Given that the cyclist takes 2 hours to cover a certain distance and the pedestrian takes 7 hours to cover the same distance, we can set up the following equation:

Distance / 2 = Distance / 7 + 10

Simplifying the equation, we get:

7 * Distance = 2 * Distance + 70

5 * Distance = 70

Distance = 14 km

Now, we can calculate the speed of the cyclist using the distance and the time taken:

Speed = Distance / Time = 14 km / 2 hours = 7 km/h

Therefore, the speed of the cyclist is 7 km/h.