Friday
March 27, 2015

Homework Help: algebra

Posted by Amy Love on Tuesday, September 27, 2011 at 9:32pm.

Joe has a ring weighing 15 grams made of an alloy of 20 silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 67 . How many grams of silver should he add?

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