235ytx 235ytx
  • 16-05-2023
  • Mathematics
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сплав состоит из меди и алюминия вместе они весят 60кг из которого 45% это медь. вопрос 1)сколько весит алюминий, 2)сколько кг меди надо в сплав чтобы в новом сплаве было 50% меди

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