Question

расстояние между двумя железнодорожными станциями 385 км. С этих станций навстречу друг другу ВЫЕХАЛИ поезда. Первый поезд вышел раньше второго на 2 часа и двигался со скоростью 53 км/ч. Через 3 часа выхода второго они встретились.Найдите скорость второго поезда. УРАВНЕНИЕ: 53(2+3)=3х=385

Answer 1

53(2+3)+3х=385
53*5+3x=385
265+3x=385
3x=385-265
3x=120
x=120:3
x=40км/ч скорость второго поезда

Answer 2

Calculation of the Second Train's Speed

To find the speed of the second train, we can use the formula:

Speed = Distance / Time

Given that the distance between the two railway stations is 385 km and the first train left 2 hours earlier, we can calculate the time it took for the two trains to meet.

The first train traveled for 3 hours before they met, so the total time for the second train to travel is 3 hours less than the time it took for the two trains to meet.

Let's calculate the speed of the second train step by step:

1. Calculate the time it took for the two trains to meet: - The first train traveled for 3 hours before they met. - Therefore, the total time for the second train to travel is 3 hours less than the time it took for the two trains to meet. - So, the total time for the second train to travel is 3 hours.

2. Calculate the speed of the second train: - Using the formula Speed = Distance / Time, we can substitute the values: - Distance = 385 km - Time = 3 hours - Therefore, the speed of the second train is 385 km / 3 hours.

Let's calculate the speed of the second train:

Speed = Distance / Time = 385 km / 3 hours = 128.33 km/h.

Therefore, the speed of the second train is approximately 128.33 km/h.