Предмет: Математика, автор: marushko01

Руда содержит 12,5% меди .Сколько нужно взять руды чтобы получить 400 кг меди

 

Ответы

Автор ответа: krimirzoeva
0
Составляем пропорцию   1 кг руды- 0, 125 кг чистой меди     ? кг руды- 400 кг чистой меди. Решение 400 * 1 : 0,125= 3200(кг)  Ответ: нужно взять 3200 кг медной руды, чтобы получить 400кг чистой меди.
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go/ they /early /home /always…They always go home early.
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