Question

Із двох міст між якими 87 км виїхали одночасно назустріч один одному два велесопидисти швидкість першого 16 км/год чому дорівнює швидкість другого велосипедиста якщо вони зустрілися через 3 год?

Answer 1

87:3=29 км/год швидкість зближення
29-16=13 км/год швидкість другого велосипедиста
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2 спосіб
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16*3=48 км проїхав перший до зустрычи
87-48=39 км проїхав другий до зустрычи
39:3=13 км/год швидкість другого

Answer 2

Problem Analysis

We have two cyclists who start from two different cities and are traveling towards each other. The distance between the cities is 87 km. The first cyclist has a speed of 16 km/h. We need to find the speed of the second cyclist if they meet after 3 hours.

Solution

To solve this problem, we can use the formula: distance = speed × time.

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

The first cyclist travels for 3 hours at a speed of 16 km/h, so the distance covered by the first cyclist is: distance_1 = speed_1 × time = 16 km/h × 3 hours = 48 km.

The second cyclist also travels for 3 hours at a speed of x km/h, so the distance covered by the second cyclist is: distance_2 = speed_2 × time = x km/h × 3 hours = 3x km.

Since they are traveling towards each other, the sum of the distances covered by both cyclists should be equal to the total distance between the cities: distance_1 + distance_2 = 87 km.

Substituting the values of distance_1 and distance_2: 48 km + 3x km = 87 km.

Now, let's solve this equation to find the value of x.

48 km + 3x km = 87 km 3x km = 87 km - 48 km 3x km = 39 km x km = 39 km / 3 x km ≈ 13 km/h.

Therefore, the speed of the second cyclist is approximately 13 km/h.

Conclusion

The speed of the second cyclist is approximately 13 km/h.