Question: code class = asciimath > 6 : If a certain weight of an alloy of copper and gold is mixed with 6 Kg of pure

code class="asciimath">6: If a certain weight of an alloy of copper and gold is mixed with 6 Kg of pure gold, the resulting alloy will have 900% gold by weight. if the same weight of initial alloy is mixed with 4 kg of another alloy which has 90% gold by weight, the resulting alloy will have 80% Gold by weight, then, the weight of the inital alloy, in Kg is?
code class = "asciimath" > 6 : If a certain

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