Mathematics · Mixtures and Alligations

An 80% copper alloy is mixed with a 20% copper alloy in the ratio 4:x such that the final mixture contains (5x + 14)% copper. What is the value of x?

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An 80% copper alloy is mixed with a 20% copper alloy in the ratio 4:x such that the final mixture contains (5x + 14)% copper. What is the value of x?

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An 80% copper alloy is mixed with a 20% copper alloy in the ratio 4:x such that the final mixture contains (5x + 14)% copper. What is the value of x?

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