Question

Петя и Коля вышли одновременно из школы и пошли домой в противоположных направлениях.Через 5 мин между ними было 925 м. Петя шёл со скоростью 90 м/мин. С какой скоростью шёл Коля?

Answer 1

1)90*5=450(км)
2)925-450=475(км)
3)475:5=95

Answer 2

Problem Analysis

We are given that Petya and Kolya left school at the same time and walked home in opposite directions. After 5 minutes, there was a distance of 925 meters between them. We are also given that Petya walked at a speed of 90 m/min. We need to determine the speed at which Kolya was walking.

Solution

Let's assume that Kolya's speed is represented by x m/min.

We can use the formula distance = speed × time to calculate the distance traveled by each person.

For Petya: - Distance = 90 m/min × 5 min = 450 meters

For Kolya: - Distance = x m/min × 5 min = 5x meters

According to the given information, the distance between Petya and Kolya after 5 minutes is 925 meters. Therefore, we can set up the following equation:

450 meters + 5x meters = 925 meters

Simplifying the equation:

5x = 925 meters - 450 meters 5x = 475 meters

Now, we can solve for x by dividing both sides of the equation by 5:

x = 475 meters / 5 x = 95 meters/min

Therefore, Kolya was walking at a speed of 95 meters/min.

Answer

Kolya was walking at a speed of 95 meters/min.