Предмет: Математика, автор: arsenijpodko7

Два велосипедиста выехали из одного пункта в противоположных направлениях. Скорость одного из них 15 км в час, а скорость другого в 2 раза меньше. Через сколько времени расстояние между ними будет равно 4 км?​

Ответы

Автор ответа: strastnevinnosts
2

Ответ:

Пошаговое объяснение:

скорость отдаления будет 15+7,5=22,5 км в час. время будет равно=s/скорость отдаления=4/22,5=8/45 часа

Приложения:
Автор ответа: iramazurk
3

Пошаговое объяснение:

1) 15 : 2 = 7,5 (км/ч) - скорость 2 велосипедиста

2) 15 + 7,5 = 22,5 (км/ч) - скорость удаления

3) 4 : 22,5 = 4 : 225/10 = 4 * 10/225= 40/225 = 8/45 (часа)

1 час = 60 минут

8/45 часа = 60 * 8/45 = 480/45 = 10. 30/45 = 10. 2/3 минут ≈ 11 минут

Ответ: через 11 минут

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