Question

Самолёт за 3 часа пролетел 2400 км В 1 час 2/5,во второй 1/3 всего расстояние.Сколько километров пролетел самолёт за третий час? Срочно!!С краткой записью

Answer 1

2400÷5=480км-1/5пути
480×2=960 км-2/5пути
2400÷3=800км-1/3пути
800×1=800км-1/3пути
960+800=1760км- в 1 и 2 ч
2400-1760=640км

Answer 2

Calculation of the Distance Flown by the Plane

To calculate the distance flown by the plane in the third hour, we need to determine the distances flown in the first two hours and subtract them from the total distance of 2400 km.

Let's calculate the distances flown in the first two hours:

- In the first hour, the plane flew 2/5 of the total distance. - In the second hour, the plane flew 1/3 of the total distance.

To find the distance flown in the first hour, we multiply the total distance by 2/5: 2400 km * 2/5 = 960 km

To find the distance flown in the second hour, we multiply the total distance by 1/3: 2400 km * 1/3 = 800 km

Now, let's calculate the distance flown in the third hour by subtracting the distances flown in the first two hours from the total distance: 2400 km - 960 km - 800 km = 640 km

Therefore, the plane flew 640 km in the third hour.

Please note that the provided search results did not directly answer the question. The calculation was done based on the given information.