Предмет: Математика, автор: бука26

при демонстрации художественного фильма по телевидению 3/10 части эфирного времени заняли рекламы.сколько времени длился художественный фильм если рекламы заняли 15 минут

Ответы

Автор ответа: Olga1vanovna

15 мин это реклама и это 3/10
15/3*10=50 мин это фильм +рекламы

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