Question

Уборочные машины одновременно выехали в 8:00 утра и поехали в одном направлении в 11:00 утра расстояние между ними было 6 км с какой скоростью двигалось первая машина если скорость второй машины было 30 км ч

Answer 1

Ответ:

28км/ч

Пошаговое объяснение:

Вторая машина проехала за 3 часа (11:00 - 8:00 = 3:00) 90км со скоростью 30км/ч.

Тогда вторая машина за 3 часа проехала 84км (90км - 6км) со скоростью 28км/ч (84км / 3 часа).

Answer 2

Problem Analysis

We are given that two cleaning machines simultaneously started at 8:00 am and traveled in the same direction. At 11:00 am, the distance between them was 6 km. We are also given that the speed of the second machine was 30 km/h. We need to find the speed of the first machine.

Solution

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

We can use the formula: speed = distance / time.

From 8:00 am to 11:00 am, the first machine traveled for 3 hours, and the second machine traveled for 3 hours as well.

The distance traveled by the first machine in 3 hours is 3x km.

The distance traveled by the second machine in 3 hours is 30 * 3 = 90 km.

According to the problem, the distance between the two machines at 11:00 am was 6 km.

So, we can set up the equation: 3x - 90 = 6.

Simplifying the equation, we get: 3x = 96.

Dividing both sides of the equation by 3, we find: x = 32.

Therefore, the speed of the first machine is 32 km/h.

Answer

The first machine was moving at a speed of 32 km/h.

Explanation

The first machine traveled for 3 hours from 8:00 am to 11:00 am. The distance traveled by the first machine in 3 hours is 3 times its speed, which is 3 * 32 = 96 km. The second machine also traveled for 3 hours at a speed of 30 km/h, covering a distance of 3 * 30 = 90 km. The difference in distance between the two machines at 11:00 am was 96 - 90 = 6 km, as given in the problem statement. Therefore, the speed of the first machine is 32 km/h.