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Mathematics, 14.08.2020 03:01 ddoherty88

If a silver alloy that costs $6.50 an ounce is going to be mixed with 30 ounces of a
silver alloy that costs $9 an ounce to
make a mixture that costs $8 an ounce,
how many ounces of the $6.50 an ounce
alloy must be used?

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If a silver alloy that costs $6.50 an ounce is going to be mixed with 30 ounces of a
silver a...

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