Question

Турист первые 15 минут шел со скорость 6 км/ч а затем 45 минут шел со скоростью 4 км/ч. Опредилите среднюю скорость туриста на всем пути?

Answer 1

Переводим минуты в часы - 15 минут = 0,25часа
45 мин = 0,75ч
находим путь который прошел турист 1) 0,25*6 = 1,5 км- за 15 минут прошел турист
2) 0,75*4 = 3км - за 45 мин
3) 1,5 + 3 = 4,5 км - общее растояние
4) 15+45=60 мин - общее время в пути
что бы найти скорость, нужно расстояние поделить на время
5) 4,5/1 = 4,5 км/ч = средняя скорость

Answer 2

Calculation of Average Speed

To calculate the average speed of the tourist, we need to find the total distance traveled and the total time taken.

The tourist walked for the first 15 minutes with a speed of 6 km/h and then walked for 45 minutes with a speed of 4 km/h.

Let's calculate the total distance traveled and the total time taken:

- Distance traveled in the first 15 minutes: 6 km/h * (15 min / 60 min) = 1.5 km- Distance traveled in the next 45 minutes: 4 km/h * (45 min / 60 min) = 3 km- Total distance traveled: 1.5 km + 3 km = 4.5 km - Total time taken: 15 min + 45 min = 60 min

Now, we can calculate the average speed using the formula:

Average Speed = Total Distance / Total Time

Substituting the values, we get:

Average Speed = 4.5 km / 60 min

Converting the time to hours:

Average Speed = 4.5 km / (60 min / 60) = 4.5 km / 1 hour

Therefore, the average speed of the tourist for the entire journey is 4.5 km/h.

Please note that the sources provided do not directly answer the question. The calculation is based on the given information and the formula for average speed.