Mathematics, 24.02.2020 01:19, brittanydeanlen

A jeweler maker has 20 ounces of a gold alloy worth $160 an ounce and 10 ounce of a silver alloy worth $140 an ounce. How many ounces of another alloy at $124 an ounce must she add to these in order to have a mixture of the three that she can use to make 3-ounce jewelry worth $438 a piece?

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A jeweler maker has 20 ounces of a gold alloy worth $160 an ounce and 10 ounce of a silver alloy wor...