Question

Из двух городов, расстояние между которыми 116 км, одновременно навстречу друг другу выехали два велосипедиста. Через 4 часа они встретились. Найдите скорость второго велосипедиста, если первый ехал со скоростью 15 км/ч.Определи какую часть общего пути прошел до встречи второй велосипедист

Answer 1

4*15=60
116-60=56
56/4=14 км/час

Answer 2

1)15•4=60( км.) проехал первый велосипедист.
2)116-60=56( км. )проехал второй велосипедист.
3)56:4=14 (км/ч) ехал второй велосипедист.

Answer 3

Problem Analysis

We have two cyclists who start simultaneously from two cities that are 116 km apart and meet after 4 hours. We need to find the speed of the second cyclist, given that the first cyclist is traveling at a speed of 15 km/h. We also need to determine the fraction of the total distance covered by the second cyclist before the meeting.

Solution

Let's assume the speed of the second cyclist is x km/h.

To find the distance covered by the first cyclist, we can use the formula:

Distance = Speed × Time

The distance covered by the first cyclist is given by:

Distance1 = Speed1 × Time

Substituting the given values:

Distance1 = 15 km/h × 4 h

Simplifying:

Distance1 = 60 km

Since the total distance between the two cities is 116 km, the distance covered by the second cyclist can be calculated as:

Distance2 = Total Distance - Distance1

Substituting the values:

Distance2 = 116 km - 60 km

Simplifying:

Distance2 = 56 km

Now, we can find the speed of the second cyclist using the formula:

Speed = Distance / Time

The speed of the second cyclist is given by:

x km/h = 56 km / 4 h

Simplifying:

x = 14 km/h

Therefore, the speed of the second cyclist is 14 km/h.

To find the fraction of the total distance covered by the second cyclist before the meeting, we can use the formula:

Fraction = Distance2 / Total Distance

Substituting the values:

Fraction = 56 km / 116 km

Simplifying:

Fraction ≈ 0.4828

Therefore, the second cyclist covered approximately 48.28% of the total distance before the meeting.

Answer

The speed of the second cyclist is 14 km/h. The second cyclist covered approximately 48.28% of the total distance before the meeting.