Question

Две змеи поползли одновременно в противоположных направлениях. Когда одна змея проползла 14 метров со скоростью 2 метра в минуту , расстояние между ними стало 35 метров. С какой скоростью ползла вторая змея ??? Напишите пожалуйста мне решение и пояснение буду очень благодарен !!!

Answer 1

1) 35 - 14 = 21 (м) проползла вторая змея.
2) 14 : 2 = 7 (мин) время, за которое обе змеи проползли свои расстояния.
3) 21 : 7 = 3 ( м/мин)
Ответ: 3 м/мин .

Answer 2

Problem Analysis

We are given that two snakes start crawling simultaneously in opposite directions. When one snake crawls 14 meters with a speed of 2 meters per minute, the distance between the snakes becomes 35 meters. We need to find the speed at which the second snake is crawling.

Solution

Let's assume that the speed of the second snake is x meters per minute. Since the snakes are crawling in opposite directions, the distance between them is increasing at a rate equal to the sum of their speeds.

According to the problem, the first snake crawls 14 meters with a speed of 2 meters per minute. Therefore, the time taken by the first snake to crawl 14 meters is given by:

time taken by the first snake = distance / speed = 14 / 2 = 7 minutes

During this time, the distance between the snakes increases from 0 meters to 35 meters. So, the rate at which the distance between the snakes is increasing is given by:

rate of increase of distance = change in distance / time = 35 / 7 = 5 meters per minute

Since the distance between the snakes is increasing at a rate equal to the sum of their speeds, we can write the following equation:

rate of increase of distance = speed of the first snake + speed of the second snake

Substituting the values we have:

5 = 2 + x

Simplifying the equation, we find:

x = 5 - 2 = 3 meters per minute

Therefore, the second snake is crawling at a speed of 3 meters per minute.

Answer

The second snake is crawling at a speed of 3 meters per minute.