Mathematics, 07.09.2021 02:30, alienfacetimelol

Gold dealers measure the purity of gold by carats (kt.). 24-karat is pure gold; hence, 12-karat gold is 50% gold. if ramzi mixes some 24-karat gold with some 12-karat gold to make 50 oz. of 21-karat gold, then how many ounces of 24-karat gold did he use?

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