Question

Из 2 городов , расстояние между которыми 846км , вышли одновременно навстречу друг другу два поезда . скорость одного поезда 48км\ч ,а скорость другого 56км\ч. какое расстояние будет между поездами через 3дня?

Answer 1

Составим выражение, если 48км\ч и 56км\ч тогда, 846-(48+56)*3=104*3=846-312=534

Answer 2

Problem Analysis

We have two trains traveling towards each other from two different cities. The distance between the cities is 846 km. The first train has a speed of 48 km/h, and the second train has a speed of 56 km/h. We need to calculate the distance between the trains after 3 days.

Calculation

To calculate the distance between the trains after 3 days, we need to determine how far each train will travel in 3 days and then subtract their distances.

The distance traveled by the first train in 3 days can be calculated using the formula: Distance = Speed × Time

For the first train: Distance = 48 km/h × 3 days

Similarly, the distance traveled by the second train in 3 days can be calculated using the same formula: Distance = 56 km/h × 3 days

Finally, we subtract the two distances to find the distance between the trains after 3 days.

Solution

Let's calculate the distances and find the answer.

The distance traveled by the first train in 3 days is: Distance1 = 48 km/h × 3 days

The distance traveled by the second train in 3 days is: Distance2 = 56 km/h × 3 days

To find the distance between the trains after 3 days, we subtract the two distances: Distance between the trains after 3 days = Distance1 - Distance2

Now, let's calculate the distances:

Distance1 = 48 km/h × 3 days = 144 km

Distance2 = 56 km/h × 3 days = 168 km

Therefore, the distance between the trains after 3 days is: Distance between the trains after 3 days = Distance1 - Distance2 = 144 km - 168 km = -24 km

Answer

The distance between the trains after 3 days is -24 km.

Please note that a negative distance indicates that the trains have passed each other and are now moving away from each other.