Question 375177
let x ounce of gold be mixed.

gold $450 -------- x ounce
alloy $200--------75 ounce
Mix $300----------(x+75)
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450x + 200*75 = 300(x+75)
450x+15000=300x+22500
450x-300x=22500-15000
150x=7500
/150
x=7500/150
x=50 ounces of pure gold.
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m.ananth@hotmail.ca