A pedestrian set off from town to village at a speed of 5 km / h. After 4 hours, a cyclist left the city for the village

| January 4, 2021 | education

A pedestrian set off from town to village at a speed of 5 km / h. After 4 hours, a cyclist left the city for the village, who after 2 hours caught up with the pedestrian. How fast was the cyclist?

Multiplying the pedestrian’s speed by time, we find out how many kilometers the pedestrian walked before the cyclist’s start:
1) 5 km / h * 4 h = 20 km.
Next, we find out the distance that the pedestrian traveled two hours before meeting the cyclist:
2) 5 km / h * 2 h = 10 km.
Now let’s calculate the total distance that the pedestrian traveled before the meeting:
3) 20 km + 10 km = 30 km.
This means that the cyclist also traveled 30 km before the meeting.
Dividing the found distance by time, we find out the speed:
4) 30 km / 2 h = 15 km / h – the speed of the cyclist.



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