Question

Мотоциклист проехал расстояние от одного города до другого за 3 ч. двигаясь со скоростью 54км\ч. Сколько времени потребуется мотоцыклисту на обратный путь,но     уже по другой дорог,если она длиннее первой на 22км, а его скорость будет меньше прежней на 8 км\ч.

Answer 1

To calculate the time it will take for the motorcyclist to return on a different road, we need to consider the following information:

- The motorcyclist traveled a distance from one city to another in 3 hours at a speed of 54 km/h. - The second road is longer than the first road by 22 km. - The motorcyclist will be traveling at a speed that is 8 km/h slower than before.

Calculating the distance traveled on the first road:

To find the distance traveled on the first road, we can use the formula:

Distance = Speed × Time

Given that the speed is 54 km/h and the time is 3 hours, we can calculate the distance:

Distance = 54 km/h × 3 hours = 162 km [[1]]

Calculating the time for the return journey on the second road:

To calculate the time it will take for the motorcyclist to return on the second road, we need to find the new speed and distance.

The new speed is 8 km/h slower than before, so the speed on the second road will be 54 km/h - 8 km/h = 46 km/h.

The distance on the second road is longer than the first road by 22 km, so the total distance on the second road will be 162 km + 22 km = 184 km.

To find the time for the return journey, we can use the formula:

Time = Distance / Speed

Substituting the values, we get:

Time = 184 km / 46 km/h = 4 hours [[2]]

Therefore, it will take the motorcyclist 4 hours to return on the second road.

I hope this helps! Let me know if you have any further questions.