SOLUTION: a metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should the metalworker combine to create 100 kg of a 44
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Question 1173226: a metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should the metalworker combine to create 100 kg of a 44 % copper alloy? Found 2 solutions by Boreal, ikleyn:Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! x kg of 0.20 Cu
100-x kg of 0.60 Cu
that has to make 100 kg of 0.44 copper, which is 44 kg pure copper.
0.20x+0.60(100-x)=44
0.20x+60-0.60x=44
-0.40x=-16
x=40 kg of 20% (8 gm of pure)
100-x=60 kg of 60% (36 gm of pure)
metalworker - someone who works metal (especially by hammering it when it is hot and malleable)
Synonyms: smith Types: blacksmith. a smith who forges and shapes iron with a hammer and anvil.
An appropriate name for the profession in your post is "a metallurgist".
