SOLUTION: How many grams of pure gold must be added to 200g of 25% gold alloy to make an alloy of 65% gold?

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Question 894255: How many grams of pure gold must be added to 200g of 25% gold alloy to make an alloy of 65% gold?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
This problem works as shown in here:

Mixture: one material quantity unknown