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     EduGorilla 
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    One alloy of metal contains 90% copper and 10% tin. Another alloy contains 93% copper and 4% tin. Later, they are mixed, so that the mixture contains 9% of tin. What percent of copper will it contain?

    Options :-

    1. 75.5%
    2. 80.5%
    3. 85.5%
    4. 90.5%
    5. None of these
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