Question

Реши задачу. быстро и правильно!!! расстояние от метеорологической станции до избушки - 18км. лыжник прошёл две третью этого расстояния, двигаясь со скоростью 200м\мин. сколько часов шёл лыжник? сможет ли он пройти оставшееся расстояние за полчаса, если будет двигаться с такой же скоростью?

Answer 1

18км=18000м 1)18000/3=6000м-путь 1 части 2)18000-6000=12000м-он прошёл 3)12000/200=60мин-ему понадобиться                                 на2вопрос 60/2=30мин-ему понадобиться чтобы пройти пройти оставщиеся путь 

Answer 2

Problem Analysis

To solve this problem, we need to determine how long the skier took to cover two-thirds of the distance from the meteorological station to the cabin. We also need to determine if the skier can cover the remaining distance in half an hour, assuming they maintain the same speed.

Solution

Let's break down the problem step by step:

1. Calculate the total distance from the meteorological station to the cabin, which is 18 km. 2. Determine two-thirds of the total distance: 2/3 * 18 km = 12 km. 3. Calculate the time it took the skier to cover two-thirds of the distance. We know the skier's speed is 200 m/min. To convert this to km/h, we divide by 1000 and multiply by 60: (200 m/min) * (60 min/1 hour) * (1 km/1000 m) = 12 km/h. 4. To find the time it took the skier to cover two-thirds of the distance, we divide the distance by the speed: (12 km) / (12 km/h) = 1 hour. 5. Finally, we need to determine if the skier can cover the remaining distance in half an hour, assuming they maintain the same speed. The remaining distance is one-third of the total distance: 1/3 * 18 km = 6 km. We can calculate the time it would take to cover this distance at the same speed: (6 km) / (12 km/h) = 0.5 hours.

Answer

The skier took 1 hour to cover two-thirds of the distance from the meteorological station to the cabin. They will be able to cover the remaining distance of 6 km in 0.5 hours if they maintain the same speed.

Please let me know if there's anything else I can help you with!