Предмет: Математика, автор: vikuny2003

скоростной поезд до Санкт- Петербурга идет 6ч со скоростью 140км/ч.с какой скоростью идет товарный поезд.если ему на это требуется 14 часов?

Ответы

Автор ответа: JenyaAlex

6 ч - 140км
140/2 = 70 - 12 ч
55 км/ч - 14 ч

Поставь лайк и отметь как лучший!

Автор ответа: Halaymahalay

6*140=840 км пусть до Питера
840:14=60 кмч скорость товарного поезда

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