Question

В первый час Коля прошёл 4 2/5 км, во второй час на 3/5 км больше.За эти два часа он прошёл на 5 4/5 км больше, чем в третий час. Сколько км Коля прошёл за 3 часа?

Answer 1

В первый час Коля прошёл 4 2/5 км, во второй час на 3/5   км больше.За эти два часа он прошёл на 5 4/5 км больше, чем в третий час. Сколько км Коля прошёл за 3 часа?

4 2\5+3\5= 4 5\5 =5

4 2\5+5=9  2\5       9 2\5 -5  4\5= 8+(5\5 +2\5)- 5  4\5  = 8  7\5  -5  4\5 =3  3\5

3  3\5 +  9  2\5= 12 5\5 =13

 

Answer 2

Путь за первый час равен S1 = 4,4 км

за второй час S2 = 4,4 + 0,6 = 5 км

за два часа    пройден путь  4,4 + 5 = 9,4 км

за третий час пройдено на 5,8 км меньше, чем всего за два часа

т.е. за третий час пройден путь

9,4 - 5,8 = 3,6 км

Всего за три часа пройден путь равный сумме 4,4 + 5 + 3,6 = 13 км

Answer 3

Calculation of Distance Covered by Kolya

To calculate the distance covered by Kolya in 3 hours, we need to analyze the information provided.

In the first hour, Kolya covered 4 2/5 km. In the second hour, Kolya covered 3/5 km more than in the first hour. In total, Kolya covered 5 4/5 km more than in the third hour.

Let's break down the information step by step:

1. In the first hour, Kolya covered 4 2/5 km. 2. In the second hour, Kolya covered 3/5 km more than in the first hour. 3. In total, Kolya covered 5 4/5 km more than in the third hour.

To find the distance covered in the second hour, we can subtract the distance covered in the first hour from the total distance covered in the first two hours:

Total distance covered in the first two hours = Distance covered in the first hour + Distance covered in the second hour

Let's calculate the distance covered in the second hour:

Distance covered in the second hour = Total distance covered in the first two hours - Distance covered in the first hour

Distance covered in the second hour = (4 2/5 km) + (3/5 km) - (4 2/5 km) = 3/5 km

Now, let's calculate the distance covered in the third hour:

Distance covered in the third hour = Total distance covered in the first two hours - Total distance covered in the first two hours

Distance covered in the third hour = (5 4/5 km) - (3/5 km) = 5 1/5 km

Finally, let's calculate the total distance covered in 3 hours:

Total distance covered in 3 hours = Distance covered in the first hour + Distance covered in the second hour + Distance covered in the third hour

Total distance covered in 3 hours = (4 2/5 km) + (3/5 km) + (5 1/5 km) = 10 km

Therefore, Kolya covered 10 km in 3 hours.

Please let me know if there's anything else I can help you with!