Question

Самолет пролетел за 3 часа 1800 км. За первый час -3/8 всего расстояния, за второй час-1/3. Сколько км пролетел самолет за третий час?

Answer 1

1) 1800 : 8 * 3 = 675 км (за первый час)
2) 1800 : 3 * 1 = 600 км (за второй час)
3) 1800 - 675 - 600 = 525 км (за третий час)
Ответ: 525 км самолёт пролетел за третий час.

Answer 2

Calculation of Distance Traveled in the Third Hour

To calculate the distance traveled by the airplane in the third hour, we need to determine the remaining distance after the first two hours.

According to the given information, the airplane traveled a total distance of 1800 km in 3 hours. In the first hour, it covered 3/8 of the total distance, and in the second hour, it covered 1/3 of the total distance.

Let's calculate the distance traveled in the first two hours:

- Distance traveled in the first hour: (3/8) * 1800 km = 675 km- Distance traveled in the second hour: (1/3) * 1800 km = 600 km To find the distance traveled in the third hour, we subtract the sum of the distances traveled in the first two hours from the total distance:

- Distance traveled in the third hour: Total distance - (Distance traveled in the first hour + Distance traveled in the second hour) - Distance traveled in the third hour: 1800 km - (675 km + 600 km) = 525 km

Therefore, the airplane traveled 525 km in the third hour.