Question

из города в противоположных направлении выехали одновременно две машины. скорость одной 65 км/ч. Найди скорость другой машины, если известно, что через 3 ч между ними было 369 км.

Answer 1

      V                                       t                                      S
1  65 км/ч                              3 ч                               
                                                                                   369 км
2  ? км/ч                                3 ч

1) S=V*t, V=S:t
    369:3=123 (км/ч) - общая скорость.
2) 123-65=58 (км/ч) - скорость другой машины.
Ответ: 58 км/ч.

Answer 2

Problem Analysis

Two cars start simultaneously from a city in opposite directions. The speed of one car is given as 65 km/h. We need to find the speed of the other car, given that after 3 hours, the distance between them was 369 km.

Solution

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

After 3 hours, the first car would have traveled a distance of 65 km/h * 3 hours = 195 km.

The second car, traveling in the opposite direction, would have also traveled a distance of x km/h * 3 hours = 3x km.

The total distance between the two cars after 3 hours is given as 369 km.

Therefore, we can write the equation: 195 km + 3x km = 369 km.

Simplifying the equation, we have: 3x km = 369 km - 195 km.

Solving for x, we get: x = (369 km - 195 km) / 3 km/h.

Let's calculate the value of x.

Calculation

x = (369 km - 195 km) / 3 km/h

x = 174 km / 3 km/h

x ≈ 58 km/h

Answer

The speed of the other car is approximately 58 km/h.

Please note that the answer is approximate due to rounding off the decimal value.