Question

Сделай чертёж и реши задачу. от двух смотровых площадок на космодроме отъехали Одновременно навстречу друг другу легковая машина и микроавтобус с туристами и встретились через 3 часа скорость микроавтобуса 15 км ч скорость машины в 4 раза больше Найди расстояние между смотровыми площадками ПОЖАЛУЙСТА ПОМОГИТЕЕЕЕ​

Answer 1

Ответ:

180

Пошаговое объяснение:

3*15+3*15*4=45+180

Answer 2

Problem Analysis

To solve this problem, we need to find the distance between two observation platforms on a cosmodrome. We are given that a car and a minibus with tourists started from opposite directions and met after 3 hours. The speed of the minibus is 15 km/h, and the speed of the car is 4 times greater. We need to find the distance between the observation platforms.

Solution

Let's assume the speed of the car is x km/h. Since the speed of the minibus is 15 km/h, the speed of the car is 4 times greater, so the speed of the car is 4x km/h.

We know that distance = speed × time. Therefore, the distance traveled by the minibus in 3 hours is 15 km/h × 3 h = 45 km.

Similarly, the distance traveled by the car in 3 hours is 4x km/h × 3 h = 12x km.

Since the car and the minibus started from opposite directions, the total distance between them is the sum of the distances traveled by each vehicle. Therefore, the total distance between the observation platforms is 45 km + 12x km.

To find the value of x, we can use the fact that the speed of the car is 4 times greater than the speed of the minibus. Therefore, we can write the equation:

4x = 15

Solving this equation, we find that x = 15/4 = 3.75 km/h.

Now we can substitute the value of x into the equation for the total distance:

Total distance = 45 km + 12x km = 45 km + 12 × 3.75 km = 45 km + 45 km = 90 km.

Therefore, the distance between the observation platforms is 90 km.

Conclusion

The distance between the two observation platforms on the cosmodrome is 90 km.