Question

Два поезда вышли одновременно из двух городов и встретились на промежуточной станций через 4 ч.Скорость одного 85км/ч,а дрогого на 5 км/ч больше.Вычисли расстояние между городами.

Answer 1

Ответ:

700 км

Пошаговое объяснение:

Дано:

Встретились через - 4 ч

V1 поезда - 85 км/ч

V2 поезда - ? км/ч, но на 5 км/ч больше V1 поезда

Найти:

Какое расстояние было между городами - ? км

Решение:

S = V · T (S - расстояние, V - скорость, T - время)

1) 85 + 5 = 90 (км/ч) - V2 поезда

2) 85 + 90 = 175 (км/ч) - V сближения

3) 175 · 4 = 700 (км) - Расстояние между городами

Ответ:

700 км

Answer 2

85 + 90 = 175 (км) - скорость сближения
175 * 4 = 700 (км) - расстояние между городами.
Ответ : 700 км

Answer 3

Problem Analysis

We are given that two trains leave two different cities simultaneously and meet at an intermediate station after 4 hours. The speed of one train is 85 km/h, while the speed of the other train is 5 km/h faster. We need to calculate the distance between the two cities.

Solution

Let's assume the speed of the second train is x km/h. Since the speed of the second train is 5 km/h faster than the first train, its speed can be represented as (85 + 5) km/h = 90 km/h.

We know that distance = speed × time.

For the first train, the distance covered in 4 hours is 85 km/h × 4 h = 340 km.

For the second train, the distance covered in 4 hours is 90 km/h × 4 h = 360 km.

Since the two trains meet at the intermediate station, the sum of the distances covered by both trains is equal to the distance between the two cities.

Therefore, the distance between the two cities is 340 km + 360 km = 700 km.

Answer: The distance between the two cities is 700 km.