Question: How do u solve this by elimination? What do I do with the 15-karat gold and how do I work with the fractions (9) Sam

How do u solve this by elimination? What do I do with the 15-karat gold and how do I work with the fractions

(9) Sam is a jewellery artist. She needs to mix metals to make her products. Pure gold is 24-karat and is very soft. It is usually mixed with other metals such as silver to make it harder. Sam has some 18-karat 18 gold ( 24 pure gold) and some 9-karat 9 gold ( 24 pure gold). What mass of each type of gold should she use to make 600 g of 15-karat gold

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