SOLUTION: A craftperson has two alloys of silver. The first on is 70% pure silver and the second one is 50% silver. How many kilograms of each must be mixed to have 12kg of an alloy which is

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Question 1055918: A craftperson has two alloys of silver. The first on is 70% pure silver and the second one is 50% silver. How many kilograms of each must be mixed to have 12kg of an alloy which is 65% silver?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
x the amount of the 70% solution
Question States:
.70x + .50(12kg-x) = .65(12kg)
x = .15(12kg)/.20
find x, amount of the 70% solution
12kg+-+x = amount of the 50% solution