Question

Помогите решить задачу: В 8 часов с аэродрома вылетел самолёт со скоростью 520 км/ч. Через 2 часа в том же направлении вылетел второй самолёт - со скоростью 840 км\ч. Найди расстояние между самолётами в 12 часов.

Answer 1

1) 12-8=4(ч)
2) 4*520=2080(км)
3) 12-(8+2)=2(ч)
4) 2*840=1680(км)
5) 2080-1680=400(км)
Ответ: расстояние между самолетами 400 кm.

Answer 2

Task Solution:

To find the distance between the two planes at 12:00, we can use the formula: distance = speed * time.

The first plane has been flying for 4 hours (from 8:00 to 12:00) at a speed of 520 km/h, so the distance it has covered is 520 km/h * 4 h = 2080 km.

The second plane has been flying for 2 hours (from 10:00 to 12:00) at a speed of 840 km/h, so the distance it has covered is 840 km/h * 2 h = 1680 km.

Therefore, the distance between the two planes at 12:00 is the difference between the distances they have covered: Distance = 2080 km - 1680 km = 400 km.

The distance between the two planes at 12:00 is 400 km.