Question

Двигаясь с одинаковой скоростью, машина до остановки ехала 3 часа, а затем еще 5 часов. расстояние которое она проехала за все время равно 640 км. сколько км она проехала за 3 часа?

Answer 1

1) 3 + 5 = 8 (ч)
2) 640 : 8 = 80 (км/ч)
3) 80 * 3 = 240 (км) - за 3 часа

Answer 2

Calculation of Distance Traveled in 3 Hours

To calculate the distance the car traveled in 3 hours, we can use the information given. The car traveled for a total of 3 hours and then an additional 5 hours, covering a total distance of 640 km.

Let's denote the distance traveled in the first 3 hours as x km. The remaining distance traveled in the next 5 hours would then be 640 - x km.

Since the car traveled at a constant speed, we can assume that the speed was the same during both time periods. Therefore, we can set up the following equation:

x + (640 - x) = 640

Simplifying the equation, we get:

2x = 640

Dividing both sides by 2, we find:

x = 320

Therefore, the car traveled 320 km in the first 3 hours.