Question

Два пешехода вышли одновременно навстречу друг другу из пунктов А и В. Скорость первого пешехода а км/ч, скорость второго - на 1 км/ч больше. Чему равно расстояние между А и В, если пешеходы встретились через 2 часа?

Answer 1

1)а+1 (км/ч) - скорость второго пешехода
2) а+а+1=2а+1 (км/ч) - скорость сближения
3) (2а+1)*2=4а+2 (км) - расстояние меду A и B
Ответ: 4а+2 км

Answer 2

Calculating the Distance Between Points A and B

To calculate the distance between points A and B, given that two pedestrians walked towards each other from these points and met after 2 hours, we can use the formula: distance = speed * time.

Given Information

- The speed of the first pedestrian is a km/h. - The speed of the second pedestrian is (a + 1) km/h. - The pedestrians met after 2 hours.

Calculating the Distance

The distance traveled by the first pedestrian is a * 2 kilometers, and the distance traveled by the second pedestrian is (a + 1) * 2 kilometers.

Equating the Distances

Since the pedestrians met, the sum of their distances should be equal to the total distance between points A and B. Therefore, we can equate the distances traveled by the two pedestrians to find the total distance between A and B.

Equation: a * 2 + (a + 1) * 2 = Total distance between A and B

Solving this equation will give us the total distance between points A and B.

Solution

Let's solve the equation to find the total distance between points A and B.