Question

Помогите решить задачу. от двух пристаней,находящихся на расстоянии 560 км друг от друга, плыли одновременно навстречу друг другу баржа и катера.через сколько часов они встретились, если скорость баржа 25 км в час а скорость катера 45 км в час.

Answer 1

1. 45+25=70(км/ч) скорость сближения
3. 560/70=8(ч)
ответ: через 8 часов

Answer 2

1) 25+45=70(км/час) скорость сближения катера с баржой                                  2) 560:70=8(через 8 часов встретятся)                                                                  Ответ: Встреча произойдет через 8 часов

Answer 3

Problem Analysis

We are given that a barge and a motorboat are traveling towards each other from two different piers that are 560 km apart. The barge has a speed of 25 km/h, and the motorboat has a speed of 45 km/h. We need to determine how many hours it takes for them to meet.

Solution

To solve this problem, we can use the formula: time = distance / speed. Since the barge and the motorboat are traveling towards each other, their combined speed is the sum of their individual speeds.

Let's calculate the time it takes for them to meet:

1. Calculate the combined speed of the barge and the motorboat: combined_speed = barge_speed + motorboat_speed. 2. Calculate the time it takes for them to meet: time = distance / combined_speed.

Calculation

1. Combined speed: combined_speed = 25 km/h + 45 km/h = 70 km/h. 2. Time to meet: time = 560 km / 70 km/h = 8 hours.

Therefore, it will take 8 hours for the barge and the motorboat to meet.

Please let me know if you need any further assistance!