Предмет: Математика, автор: polina62562282

природа Минерале малахита содержит меди составляет 57% Какова масса добытого куска малахита если в нём содержится 114 кг меди

Ответы

Автор ответа: xxxeol
3

Ответ: 200 кг.

ДАНО:

m = 114 кг - масса меди в  части образца.

57% = 0,57 - доля меди в образце

НАЙТИ: M=? -  масса образца.

Пошаговое объяснение:

Целое по его части находим делением на её долю.

114 кг : 57% = 114 : 0,57 = 200 кг - масса руды.

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B systems
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2. A asked
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3. A relation
B agreement
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4. A about
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15. A verdicts
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