Question

Из двух городов, расстояние навстречу между которыми равно 625 км, навстречу друг другу одновременно выехали два автомобиля. Найдите скорость первого автомобиля, если скорость второго равна 60 км/ч и автомобили встретились через 5 часов после выезда

Answer 1

60*5=300 км проехал 2й автомобиль до встречи
625-300=325 км проехал 1й автомобиль до встречи
325/5=65 км/ч скорость 1ого автомобиля

Answer 2

625/5=125(км\ч)-скорость 1

Answer 3

Problem Analysis

We are given that two cars start simultaneously from two cities and meet each other after 5 hours. The distance between the cities is 625 km. We need to find the speed of the first car, given that the speed of the second car is 60 km/h.

Solution

Let's assume the speed of the first car is x km/h.

We can use the formula: distance = speed × time to find the distance traveled by each car.

For the first car: distance = speed × time = x km/h × 5 hours = 5x km

For the second car: distance = speed × time = 60 km/h × 5 hours = 300 km

Since the two cars meet each other, the sum of their distances should be equal to the total distance between the cities.

5x km + 300 km = 625 km

Simplifying the equation: 5x + 300 = 625 5x = 625 - 300 5x = 325 x = 325 / 5 x = 65

Therefore, the speed of the first car is 65 km/h.

Answer

The speed of the first car is 65 km/h.