Question

Поезд был в пути 3 ч. и прошел 230 км. За первый час он прошел 78 км, 500 м, а за второй час на 6 км меньше,чем за первый. Какой путь прошел поезд за третий час?

Answer 1

Переводим 78км 500м в метры
1км=1000м
78 км 500м=78500м

перводим 6 км в метры
1км=1000м
6 км=6000м

78500-6000=72500м (второй час)

переводим 230 км в метры
1км=1000м
230км=230000м

230000-78500=151500м
157500-72500=85000м

перводим метры в километры
1000м=1 км
85000м=85км
Ответ: за 3 час поезд проехал 85 км

Answer 2

Calculation of the Train's Distance Traveled in the Third Hour

To calculate the distance traveled by the train in the third hour, we need to analyze the information provided.

According to the given information: - The train was in motion for 3 hours. - In the first hour, it traveled 78 km and 500 m. - In the second hour, it traveled 6 km less than in the first hour.

To find the distance traveled in the third hour, we can follow these steps:

1. Calculate the total distance traveled in the first two hours: - In the first hour, the train traveled 78 km and 500 m. - In the second hour, it traveled 6 km less than in the first hour. - Therefore, the distance traveled in the second hour is 78 km and 500 m - 6 km = 72 km and 500 m. - The total distance traveled in the first two hours is 78 km and 500 m + 72 km and 500 m = 151 km.

2. Subtract the total distance traveled in the first two hours from the total distance traveled in 3 hours to find the distance traveled in the third hour: - The total distance traveled in 3 hours is given as 230 km. - Therefore, the distance traveled in the third hour is 230 km - 151 km = 79 km.

Therefore, the train traveled 79 km in the third hour.