Предмет: Математика, автор: ed38

Площадь трех комнат 50 метров в 2 . Площадь первой комнаты составляет 40% площади всех комнат,площадь второй комнаты -70%площади первой комнаты.Найдите площадь третьей комнаты

Ответы

Автор ответа: helena1414

1-я комната: 50 * 0,4 = 20 кв.м.
2-я комната: 20 * 0,7 = 14 кв.м
3-я комната: 50 - 20 - 14 = 16 кв.м

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