Question

Выезжая из села,велосипедист заметил на мосту пешехода,идущего в том же направлении,и догнал его через 12 мин.С какой скоростью шёл пешеход,если скорость велосипедиста была 15км/ч,а расстояние от села до моста 1км 800м?

Answer 1

15 мин=0,2ч

15км/ч * 0,2ч=3км-расстояние через которое велосипедист догнал пешехода

1км800м=1,8км

3 - 1,8=1,2км-расстоние пешехода

Пешеход был в пути 0,2ч

1,2км/0,2ч=6 км/ч -скорость пешехода

Answer 2

Problem Analysis

A cyclist noticed a pedestrian on a bridge while leaving a village. The cyclist caught up with the pedestrian after 12 minutes. The cyclist's speed was 15 km/h, and the distance from the village to the bridge was 1 km 800 m. We need to calculate the speed of the pedestrian.

Solution

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

Speed = Distance / Time

Let's calculate the time it took for the cyclist to catch up with the pedestrian. We know that the cyclist's speed was 15 km/h, and the time was 12 minutes.

Time = 12 minutes = 12/60 hours = 0.2 hours

Now, let's calculate the distance traveled by the cyclist. The distance from the village to the bridge is given as 1 km 800 m.

Distance = 1 km 800 m = 1.8 km

Using the formula, we can calculate the speed of the pedestrian:

Speed of the pedestrian = Distance / Time

Speed of the pedestrian = 1.8 km / 0.2 hours

Speed of the pedestrian = 9 km/h

Therefore, the pedestrian was walking at a speed of 9 km/h.

Answer

The pedestrian was walking at a speed of 9 km/h.