Question

1. Решите задачу. Расстояние по реке между двумя городами 275 км. Из этих городов одновременно навстречу друг другу вышли баржа и пароход. Пароход шел со скоростью 27км/ч. Найди скорость баржи, если известно, что они встретились через 5 часов после выхода.

Answer 1

1)  275:5=55(км/ч)-скорость сближения.
2)  55-28=27(км/ч)-скорость баржи.
 Ответ:27км/ч скорость баржи  ytpfxnj

Answer 2

Problem Analysis

We are given that the distance between two cities along a river is 275 km. A barge and a steamboat set out from these cities simultaneously to meet each other. The steamboat travels at a speed of 27 km/h. We need to find the speed of the barge, given that they meet after 5 hours.

Solution

Let's assume the speed of the barge is x km/h.

We can use the formula: distance = speed × time to solve this problem.

The distance traveled by the steamboat in 5 hours is: 27 km/h × 5 hours = 135 km.

Since the barge and the steamboat meet each other, the total distance traveled by both of them is equal to the distance between the cities, which is 275 km.

Therefore, the distance traveled by the barge in 5 hours is: 275 km - 135 km = 140 km.

Using the formula, we can write the equation: distance = speed × time.

Substituting the values, we get: 140 km = x km/h × 5 hours.

To find the speed of the barge, we can rearrange the equation to solve for x:

x km/h = 140 km / 5 hours.

Simplifying the equation, we find that the speed of the barge is 28 km/h.

Answer

The speed of the barge is 28 km/h.