Question

Расстояние между паучками 210 км . они полетели на своих паутинках одновременно навстречу друг другу один летел со скоростью 40 км.ч с какой скоростью летел 2 паучёк если они встретились через 3ч

Answer 1

1) 40*3=120
2)210-120=90
3)90:3=30
Відповідь: 30 км/год летів2 паучок

Answer 2

Problem Analysis

We are given that two spiders start flying towards each other simultaneously. The distance between them is 210 km. One spider is flying at a speed of 40 km/h. We need to find the speed at which the second spider is flying if they meet after 3 hours.

Solution

To find the speed of the second spider, we can use the formula:

Distance = Speed × Time

Let's denote the speed of the second spider as x km/h. We know that the distance traveled by the first spider is 40 km/h × 3 h = 120 km. The remaining distance between the spiders is 210 km - 120 km = 90 km.

Since the spiders are flying towards each other, the sum of the distances traveled by both spiders should be equal to the total distance between them. Therefore, we can set up the following equation:

40 km/h × 3 h + x km/h × 3 h = 210 km

Simplifying the equation, we get:

120 km + 3x km = 210 km

Subtracting 120 km from both sides, we have:

3x km = 90 km

Dividing both sides by 3, we find:

x km = 30 km/h

Therefore, the second spider is flying at a speed of 30 km/h.

Answer

The second spider is flying at a speed of 30 km/h.

Explanation

When two spiders start flying towards each other simultaneously, with a distance of 210 km between them, and one spider is flying at a speed of 40 km/h, the second spider is flying at a speed of 30 km/h. They meet after 3 hours of flying.