SOLUTION: 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 har
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Question 1145206: 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 gold(18over24) and some 9-karat gold(9over24 pure gold). What mass of each type of gold should she use to make 600g of 15-karat gold?
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
Note that 18 karat is twice the concentration of 9 karat.
w grams of the 18 karat gold
600-w grams of the 9 karat gold
---------grams of the 18 karat gold
---------------grams of the 9 karat gold
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