Alloy
About the alloy consisting of unequal weight fractions of gold, silver and copper, it is known that:
* None of the metals that are studied in the laboratory is a fraction greater than gold in the alloy;
* if gold constitutes some of the lowest parts of the weight in the alloy, then it is not examined in the laboratory;
* only one metal is not examined in the laboratory;
* the metal in the laboratory does not examine, the weight fraction of which in the alloy is uniquely determined by the previous conditions;
* If silver or copper makes up the average proportion in the alloy, then copper is a fraction larger than the metal that is mined in Topongo.
The question is: what proportion - large, medium, smaller - is each of the metals in the alloy, which metal is not examined in the laboratory and which is mined in Topongo?
* None of the metals that are studied in the laboratory is a fraction greater than gold in the alloy;
* if gold constitutes some of the lowest parts of the weight in the alloy, then it is not examined in the laboratory;
* only one metal is not examined in the laboratory;
* the metal in the laboratory does not examine, the weight fraction of which in the alloy is uniquely determined by the previous conditions;
* If silver or copper makes up the average proportion in the alloy, then copper is a fraction larger than the metal that is mined in Topongo.
The question is: what proportion - large, medium, smaller - is each of the metals in the alloy, which metal is not examined in the laboratory and which is mined in Topongo?
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Source: https://habr.com/ru/post/17951/
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