Предмет: Математика, автор: Аноним

№157 помогите пожалуйста.!.

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Автор ответа: lara164
0
Из одного и того же пункта в разных направлениях отправились два пассажирских поезда. скорость первого - 50 км/ч, скорость второго 70 км/ч. Через какое время расстояние между ними будет 480 км?
Решение:
50+70=120(км/ч) -скорость с которой поезда отдаляются друг от друга
480:120=4(ч) через такое время между ними будет расстояние 480 км
Автор ответа: Аноним
0
Спасибо большое!!!!
Автор ответа: Аноним
0
Лучший Модератор
Автор ответа: lara164
0
не за что! :)
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