Mathematics, 31.10.2020 01:00, brookcoyanpeus5y

a jeweler is using 10 pounds of alloy that is 2% platinum. He wishes to combine these mixtures to form a mixture that is 3% platinum. How many pounds of the second alloy should be added to the first to get a mixture that is 3% platinum

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a jeweler is using 10 pounds of alloy that is 2% platinum. He wishes to combine these mixtures to fo...