Question

3. Турист добирался до дома следующим маршрутом: 1 час он ехал на машине по шоссе со скоростью 85 км/ч, затем 54 минуты он ехал на мотоцикле по проселочной дороге со скоростью 40 км/ч, последние 6 минут шел пешком по лесу со скоростью 10 км/ч. Чему равна средняя скорость на всем пути?ПОЖАЛУЙСТА ПОМОГИТЕ​

Answer 1

Ответ:

85+40+10=135; 135:3= 45 км/час - скорость на всем пути.

Answer 2

Calculation of Average Speed

To calculate the average speed for the entire journey, we need to find the total distance traveled and the total time taken.

The traveler spent: - 1 hour driving on the highway at a speed of 85 km/h - 54 minutes riding a motorcycle on a dirt road at a speed of 40 km/h - 6 minutes walking through the forest at a speed of 10 km/h

Let's convert the time into hours for easier calculations:

- 54 minutes = 54/60 = 0.9 hours - 6 minutes = 6/60 = 0.1 hours

Now, let's calculate the total distance traveled:

- Distance on the highway = 85 km/h * 1 hour = 85 km - Distance on the dirt road = 40 km/h * 0.9 hours = 36 km - Distance walking through the forest = 10 km/h * 0.1 hours = 1 km

The total distance traveled is 85 km + 36 km + 1 km = 122 km.

Next, let's calculate the total time taken:

- Total time = 1 hour + 0.9 hours + 0.1 hours = 2 hours

Finally, we can calculate the average speed:

- Average speed = Total distance / Total time = 122 km / 2 hours = 61 km/h.

Therefore, the average speed for the entire journey is 61 km/h.