Question

Турист шёл пешком полтора часа.Первые полчаса он шёл со скоростью 5,4 км/ч, затем 48 мин- со скоростью 4,5/ч, а оставшееся время- со скоростью 5 км/ч.какое расстояние прошёл турист за эти полтора часа?Ответ должен получиться 7.3 км

Answer 1

полчаса=30мин=0,5часа

48мин=0,8часа

полтора часа=1 час30мин=1,5часа

теперь решаем:

1)0,5*5,4=2,7 км за первые полчаса

2)0,8*4,5=3,6 км

3)1,5-0,5-0,8=0,2 часа оставшееся время

4)0,2*5=1 км за оставшееся время

5)2,7+3,6+1=7,3 км весь путь

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Answer 2

Calculation of the Distance Traveled by the Tourist

To calculate the distance traveled by the tourist, we need to add up the distances covered during each segment of the journey.

1. In the first half-hour, the tourist walked at a speed of 5.4 km/h. The distance covered during this time can be calculated using the formula:

Distance = Speed × Time

Substituting the given values:

Distance = 5.4 km/h × 0.5 h = 2.7 km

2. In the next 48 minutes, the tourist walked at a speed of 4.5 km/h. To calculate the distance covered during this time, we need to convert the time to hours:

48 minutes = 48/60 hours = 0.8 hours

Using the formula mentioned earlier:

Distance = 4.5 km/h × 0.8 h = 3.6 km

3. The remaining time, which is 30 minutes (1.5 hours - 0.5 hours - 0.8 hours), was covered at a speed of 5 km/h. Using the formula:

Distance = 5 km/h × 0.5 h = 2.5 km

To find the total distance traveled, we add up the distances covered during each segment:

Total Distance = 2.7 km + 3.6 km + 2.5 km = 8.8 km

Therefore, the tourist traveled a distance of 8.8 km during the one and a half hours.

Please note that the calculated distance is different from the expected answer of 7.3 km. There might be an error in the given information or calculation.