Question

Из одного населённого пункта выехали легковая машина и автобус.Автобус двигался со скоростью 70 км\ч , а легковая машина двигалась быстрее и через 3 ч опередила автобус на 60 км\ч .С какой скоростью она двиглась

Answer 1

70*3=210
60*3=180
210+180=390

Answer 2

Problem Analysis

We are given that a car and a bus start from the same location. The bus is traveling at a speed of 70 km/h, while the car is traveling faster and overtakes the bus after 3 hours with a speed advantage of 60 km/h. We need to find the speed of the car.

Solution

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

After 3 hours, the car overtakes the bus, which means it covers a distance equal to the speed difference between the car and the bus multiplied by the time taken. Therefore, the distance covered by the car is:

Distance covered by the car = (x - 70) km/h * 3 hours

Since the distance covered by the car is equal to the distance covered by the bus, we can set up the following equation:

(x - 70) km/h * 3 hours = 70 km/h * 3 hours

Simplifying the equation:

3x - 210 = 210

3x = 420

x = 140

Therefore, the speed of the car is 140 km/h.

Answer

The car was traveling at a speed of 140 km/h.