Question

2 грузовика выехали в 10 .00 в противоположных направлениях . Через 5 часов расстояние между ними было 1140 км. На сколько скорость 1 ого грузовика меньше скорости 2 ого , если 1 ый грузовик за 5 часов проехал 600 км.

Answer 1

1)1140-600=540км - проехал 2 грузовик за 5 часов
2)540/5=108км/ч - скорость 2 грузовика
3)600/5=120 км  км/ч - скорость 1 грузовика
Ответ Скорость 1 грузовика - 120 км/ч
             Скорость 2 грузовика - 108 км/ч

Answer 2

Problem Analysis

We have two trucks that started driving in opposite directions at 10:00. After 5 hours, the distance between them was 1140 km. We need to determine the difference in speed between the two trucks, given that the first truck traveled 600 km in 5 hours.

Solution

Let's assume the speed of the first truck is x km/h and the speed of the second truck is y km/h.

We know that the distance traveled by the first truck in 5 hours is 600 km. Therefore, we can write the equation:

Distance = Speed × Time

For the first truck, the equation becomes:

600 = x × 5

Simplifying, we find:

x = 600 / 5 = 120 km/h

We also know that the total distance between the two trucks after 5 hours is 1140 km. Since they are moving in opposite directions, we can add their distances to get the total distance:

Distance1 + Distance2 = 1140

Using the formula Distance = Speed × Time, we can write the equation for the second truck:

y × 5 + x × 5 = 1140

Substituting the value of x, we get:

y × 5 + 120 × 5 = 1140

Simplifying, we find:

5y + 600 = 1140

5y = 540

y = 540 / 5 = 108 km/h

Therefore, the speed of the second truck is 108 km/h.

To find the difference in speed between the two trucks, we subtract the speed of the first truck from the speed of the second truck:

Difference in speed = y - x = 108 - 120 = -12 km/h

The negative sign indicates that the first truck is slower than the second truck by 12 km/h.

Answer

The speed of the first truck is 120 km/h and the speed of the second truck is 108 km/h. Therefore, the first truck is slower than the second truck by 12 km/h.