Question

Из двух точек, расстояние между которыми 351 км, вылетели навстречу друг другу два вертолета. Через 3 ч они встретились. Один вертолет летел со скоростью 65 км/ч. Найди скорость второго вертолёта. ​

Answer 1

Ответ:

Пошаговое объяснение:

351 : 3 = 117км/ч скорость сближения

117-65 = 52км/ч скорость второго вертолёта. ​

Answer 2

Problem Analysis

We are given that two helicopters flew towards each other from two points that are 351 km apart. After 3 hours, they met. One helicopter flew at a speed of 65 km/h, and we need to find the speed of the second helicopter.

Solution

Let's assume the speed of the second helicopter is x km/h.

The total distance traveled by the first helicopter in 3 hours is 65 km/h * 3 h = 195 km.

The total distance traveled by the second helicopter in 3 hours is x km/h * 3 h = 3x km.

Since they met after 3 hours, the sum of the distances traveled by both helicopters should be equal to the total distance between the two points, which is 351 km.

So, we can write the equation: 195 km + 3x km = 351 km.

To find the value of x, we can solve this equation.

195 km + 3x km = 351 km

Subtracting 195 km from both sides:

3x km = 351 km - 195 km

3x km = 156 km

Dividing both sides by 3:

x = 52 km/h

Therefore, the speed of the second helicopter is 52 km/h.

Answer

The speed of the second helicopter is 52 km/h.