Question

Из двух городов, расстояние между которыми равно 1008 км, выехали одновременно два автомобиля навстречу друг другу и встретились через 8 часов после начала движения. Скорость первого автомобиля равна 70км/час Найдите скорость второго автомобиля

Answer 1

1)1008:8=126 (км) - общая скорость двух машин. 
2)126-70=56 (км/ч) - скорость второй машины.
Ответ: 56 км/ч скорость второй машины.

Answer 2

Problem Analysis

We are given that two cars start from two different cities and travel towards each other. The distance between the cities is 1008 km. The first car has a speed of 70 km/h. We need to find the speed of the second car.

Solution

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

We know that the time taken by both cars to meet is 8 hours.

Using the formula time = distance / speed, we can set up the following equation:

For the first car: 8 = 1008 / 70

For the second car: 8 = 1008 / x

To find the speed of the second car, we can solve the equation 8 = 1008 / x for x.

Calculation

To find the speed of the second car, we can solve the equation 8 = 1008 / x for x.

Simplifying the equation: 8x = 1008

Dividing both sides by 8: x = 1008 / 8

Calculating the value of x: x = 126

Answer

The speed of the second car is 126 km/h.