Question

Из двух городов одновременно навстречу друг другу выехали две машины.Через 2 ч расстояние между ними стало 123 км. Какое расстояние между городами, если скорости машин 65 км/ч и 74 км/ ч?

Answer 1

65*2+74*2+123=401 км

Answer 2

Problem Analysis

We have two cars that start from two different cities and travel towards each other. After 2 hours, the distance between them is 123 km. We need to find the total distance between the cities given that the speeds of the cars are 65 km/h and 74 km/h.

Solution

To solve this problem, we can use the formula:

Distance = Speed × Time

Let's denote the distance between the cities as D. We know that the first car travels at a speed of 65 km/h and the second car travels at a speed of 74 km/h. After 2 hours, the distance between the cars is 123 km. We can set up the following equation:

65 km/h × 2 hours + 74 km/h × 2 hours = D km

Simplifying the equation:

130 km + 148 km = D km

278 km = D km

Therefore, the total distance between the cities is 278 km.

Answer

The total distance between the two cities is 278 km.