Question

реши задачуИз двух поселков растояние между которыми 75 км вышли одновременно навстречу друг другу два лыжника Первый идет со скоростью 12\ч а второй со скоростью 13 км \ч они идет уже 2 часа какое расстояние им надо еще пройти до встречи сколько времени это займет

Answer 1

x - расстояние, которое осталось пройти

75= 2(13+12)+x

x=25

13+12=25км/ч (общая скорость) => остался 1 час

 

Answer 2

Task Solution

To solve this problem, we can use the formula:

time = distance / speed

First, we need to find the time it takes for each skier to meet. Then, we can use the time to calculate the distance they still need to cover.

1. Time taken by the first skier (time1): - Distance = 75 km - Speed = 12 km/h - Using the formula: time1 = distance / speed - Calculating: time1 = 75 km / 12 km/h = 6.25 hours

2. Time taken by the second skier (time2): - Distance = 75 km - Speed = 13 km/h - Using the formula: time2 = distance / speed - Calculating: time2 = 75 km / 13 km/h = 5.77 hours

3. Total time taken for them to meet: - Total time = time1 + time2 - Calculating: Total time = 6.25 hours + 5.77 hours = 12.02 hours

4. Distance they still need to cover: - Distance = (time1 + time2) * combined speed - Calculating: Distance = 12.02 hours * (12 km/h + 13 km/h) = 144.24 km

Conclusion

The skiers need to cover approximately 144.24 km more before they meet, and it will take them approximately 12.02 hours to do so.