Question

Из 2 городов расстояние между которыми 510 километров вышли Одновременно навстречу друг другу два поезда и встретились через 3 часа С какой скоростью шел второй поезд если скорость первого 90 километров час на сколько километров скорость первого больше скорости второго

Answer 1

Скорость второго больше на 20км,его скорость110км в час

Answer 2

90×3=270 км - прошел 1 поезд 510-270=240 км - прошел 2 поезд 240÷3=80 км/ч - скорость 2 поезда 90-80=10 км/ч Ответ: на 10 км/ч скорость 1 поезда больше скорости 2 поезда.

Answer 3

Problem Analysis

We have two trains traveling towards each other from two different cities. The distance between the cities is 510 kilometers. The trains meet each other after 3 hours. We need to find the speed of the second train and determine how much slower it is compared to the first train.

Solution

Let's assume the speed of the second train is x kilometers per hour.

The first train is traveling at a speed of 90 kilometers per hour.

We know that the distance traveled by both trains is equal to the total distance between the cities, which is 510 kilometers.

The formula to calculate the distance traveled is:

Distance = Speed × Time

For the first train: Distance = 90 km/h × 3 h = 270 km

For the second train: Distance = x km/h × 3 h = 3x km

Since the total distance is 510 km, we can set up the equation:

270 km + 3x km = 510 km

Simplifying the equation: 3x km = 510 km - 270 km 3x km = 240 km

Dividing both sides of the equation by 3: x km = 240 km / 3 x km = 80 km/h

Therefore, the speed of the second train is 80 kilometers per hour.

To find out how much slower the second train is compared to the first train, we can calculate the difference in their speeds:

Difference in speed = Speed of the first train - Speed of the second train Difference in speed = 90 km/h - 80 km/h Difference in speed = 10 km/h

Therefore, the second train is 10 kilometers per hour slower than the first train.

Answer

The second train is traveling at a speed of 80 kilometers per hour. The speed of the first train is 90 kilometers per hour, so the second train is 10 kilometers per hour slower than the first train.