Question

Из двух пунктов,расстояние между которыми 30 км,отправились навстречу друг друну 2 черепахи. Скорость одной 4 м. В мин. Скорость другой на 2 м. Мин. Больше через какое время черепази встретятся?плиз,решите)

Answer 1

1)4+2=6м/мин скорость второй черепах. 2)30-(6+4)=20мин. ответ:20 минут

Answer 2

4+2=6(м) -скорость 2 черепахи                                                                           4+6=10(м)- скорость 2 черепах                                                                        30км=30000м                                                                                                    30000:10=3000(мин) или 50 часов                                                                      Ответ: через 50 часов .

Answer 3

Problem Analysis

We have two turtles moving towards each other. The distance between them is 30 km. The first turtle has a speed of 4 m/min, while the second turtle has a speed 2 m/min faster than the first turtle. We need to find out how long it will take for the turtles to meet.

Solution

Let's assume that the time it takes for the turtles to meet is t minutes.

The first turtle covers a distance of 4t meters in t minutes, and the second turtle covers a distance of (4+2)t = 6t meters in t minutes.

Since the total distance between the turtles is 30 km, which is equal to 30,000 meters, we can set up the following equation:

4t + 6t = 30,000

Simplifying the equation:

10t = 30,000

Dividing both sides by 10:

t = 3,000

Therefore, it will take the turtles 3,000 minutes to meet.

Answer

The turtles will meet after 3,000 minutes.

Note: The solution assumes that the turtles start moving towards each other at the same time.