Question

Решение задачи поезд за 2 часа пути преодолел расстояние 180 км а затем за 3 часа 315 км какова средняя скорасть поезда

Answer 1

315+180=495 км весь путь
495/5ч=99 км в ч средняя скорость на всем пути

Answer 2

Problem Analysis

We are given that a train traveled a distance of 180 km in 2 hours and then traveled a distance of 315 km in 3 hours. We need to find the average speed of the train.

Solution

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

Average Speed = Total Distance / Total Time

Let's calculate the average speed step by step.

Step 1: Calculate the total distance traveled by the train. - The train traveled a distance of 180 km in 2 hours. - The train traveled a distance of 315 km in 3 hours. - Therefore, the total distance traveled by the train is 180 km + 315 km = 495 km.

Step 2: Calculate the total time taken by the train. - The train took 2 hours to travel a distance of 180 km. - The train took 3 hours to travel a distance of 315 km. - Therefore, the total time taken by the train is 2 hours + 3 hours = 5 hours.

Step 3: Calculate the average speed of the train. - Using the formula, Average Speed = Total Distance / Total Time, we can substitute the values: - Average Speed = 495 km / 5 hours = 99 km/h.

Answer

Therefore, the average speed of the train is 99 km/h.