Question

Поезд прошел перегон за 20 минут.за какое время он прошел бы этот перегон со скоростью,в 2 раза меньшей?

Answer 1

За 10 минут...по логике даже посмотри..

Answer 2

Calculating Time Taken for the Journey

To calculate the time taken for the journey at a speed that is two times slower, we can use the following formula:

Time = Distance / Speed

Given that the train covered the distance in 20 minutes, we can calculate the time it would take at a speed that is two times slower.

Using the formula: Time = Distance / Speed

We can calculate the time taken for the journey at a speed that is two times slower.

Calculation

Let's denote: - Original speed as S - Time taken at original speed as T - Distance covered as D

Given: - Time taken at original speed, T = 20 minutes

We need to find the time taken at a speed that is two times slower.

Using the formula: Time = Distance / Speed

We can calculate the time taken for the journey at a speed that is two times slower.

Solution

Given that the train covered the distance in 20 minutes, we can calculate the time it would take at a speed that is two times slower.

Let's denote the time taken at the slower speed as T' and the slower speed as S'.

We know that: - T = 20 minutes - S' = S / 2 (since the speed is two times slower)

Using the formula: Time = Distance / Speed

We can calculate the time taken at the slower speed: T' = D / (S / 2)

Conclusion

The train would take 40 minutes to cover the same distance at a speed that is two times slower.