Question

Длина аллеи 540м.От двух концов аллеи побежали одновременно навстречу друг другу Петя и его собака Пират.Через 2 минуты Петя надел на Пирата поводок.С какой скоростью бежал Петя, если скорость Пирата была 150м/мин? решите пажалуйсто условие и решение и ответ.

Answer 1

Найдем скорость сближения: 540м: 2мин= 270м/мин.

Скорость сближения- V1+V2=270-150=120м/мин- скорость Пети.

Ответ: 120м/мин

Answer 2

условие: путь равен А=540

              скорость Пирата V=150м/мин

              время Т=2 мин

найти скорость Пети (V1)

Решение.

(V+V1)*T=540

(150+V1)*2=540

300+2*V1=540

2*V1=540-300

2*V1=160

V1=160/2

V1=80м/мин - скорость Пети

ответ. 80 м/мин скорость, с которой бежал Петя.

Answer 3

Problem Analysis

We are given that the length of the alley is 540m. Petya and his dog, Pirat, start running towards each other from opposite ends of the alley. After 2 minutes, Petya puts a leash on Pirat. We need to find Petya's running speed if Pirat's speed is 150m/min.

Solution

Let's assume that Petya's running speed is x m/min. Since Petya and Pirat are running towards each other, their combined speed is the sum of their individual speeds. Therefore, the combined speed is x + 150 m/min.

We know that distance = speed × time. In this case, the distance is 540m and the time is 2 minutes. We can set up the following equation:

540 = (x + 150) × 2

To solve for x, we can simplify the equation:

540 = 2x + 300

Subtracting 300 from both sides:

240 = 2x

Dividing both sides by 2:

x = 120

Therefore, Petya's running speed is 120m/min.

Answer

Petya's running speed is 120m/min.

Explanation

Petya and his dog, Pirat, start running towards each other from opposite ends of the 540m alley. After 2 minutes, Petya puts a leash on Pirat. We need to find Petya's running speed if Pirat's speed is 150m/min.

Let's assume Petya's running speed is x m/min. Since Petya and Pirat are running towards each other, their combined speed is the sum of their individual speeds, which is x + 150 m/min.

Using the formula distance = speed × time, we can set up the equation 540 = (x + 150) × 2. Simplifying this equation, we get 540 = 2x + 300. Subtracting 300 from both sides gives us 240 = 2x. Dividing both sides by 2, we find that x = 120.

Therefore, Petya's running speed is 120m/min.