Question

Поезд двигаясь со скоростью 75 км/ч преодолевает расстояние между первой и второй станциями за 2 ч 24 мин.На сколько минут раньше прибудет поезд на вторую станцию ,если он увеличит скорость на 20%?

Answer 1

1) 75км/ч * 2ч24м(2,4ч)=75*2,4=180км  расстояние между станциями
2) 75км/ч +20% = 75+75*0,2=90км/ч
3) 180/90=2ч
4) 2ч24м-2ч=24м
Ответ: 24 минуты

Answer 2

Calculation of Arrival Time Difference

To calculate the time difference in the train's arrival at the second station when it increases its speed by 20%, we need to consider the initial time it takes to travel between the two stations.

Given: - Initial speed of the train: 75 km/h - Time taken to travel between the first and second stations: 2 hours 24 minutes

First, let's convert the time taken to minutes for easier calculations: - 2 hours = 2 * 60 minutes = 120 minutes - 24 minutes = 24 minutes

So, the total time taken to travel between the first and second stations is 120 minutes + 24 minutes = 144 minutes.

Now, let's calculate the time difference when the train increases its speed by 20%.

To increase the speed by 20%, we need to multiply the initial speed by 1.2: - Increased speed = 75 km/h * 1.2 = 90 km/h

Next, we need to calculate the time taken to travel between the first and second stations at the increased speed.

Using the formula: time = distance / speed, we can find the distance between the first and second stations.

Unfortunately, the exact distance between the stations is not provided in the question or search results. Therefore, we cannot calculate the exact time difference without this information.

Please provide the distance between the first and second stations, and I will be able to calculate the time difference for you.