Question

Из двух поселков расстояние между которыми 72 км одновременно на встречу друг другу выехали два велосипедиста.они встретились через 3 часа.чему равна скорость второго велосипедиста если скорость первого велосипедиста равна 13 км/ч?

Answer 1

Одновременно и навстречу -  скорости складываются.
РЕШЕНИЕ
1) Vc = V1 + V2 =  72 км : 3 ч = 24 км/ч - скорость сближения
2) V2 = Vc - V1 = 24 - 13 = 11 км/ч - скорость второго - ОТВЕТ 

Answer 2

Problem Analysis

To solve this problem, we can use the formula:

distance = speed * time

Given that the distance between the two cyclists is 72 km and they meet after 3 hours, we can use this information to calculate the speed of the second cyclist.

Calculation

Using the formula distance = speed * time, we can calculate the speed of the second cyclist as follows:

First, we calculate the speed of the first cyclist: - Distance = Speed * Time - 72 km = 13 km/h * 3 h - Speed of the first cyclist = 13 km/h

Next, we calculate the speed of the second cyclist: - Distance = Speed * Time - 72 km = Speed of the second cyclist * 3 h - Speed of the second cyclist = 72 km / 3 h - Speed of the second cyclist = 24 km/h

Therefore, the speed of the second cyclist is 24 km/h.

Conclusion

The speed of the second cyclist is 24 km/h.