Pure gold is too soft to be used for jewelry, so gold is always mixed with other

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Pure gold is too soft to be used for jewelry, so gold is always mixed with other metals. 18-karat gold is 75% gold and 25% other metals. How much pure gold must be mixed with 5 oz of 18-karat gold to make a 22-karat (91.7%) gold mixture?

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Discovering Advanced Algebra An Investigative Approach

ISBN: 978-1559539845

1st edition

Authors: Jerald Murdock, Ellen Kamischke, Eric Kamischke

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Question Posted: May 17, 2016 07:10 AM

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Pure gold is too soft to be used for jewelry, so gold is always mixed with other

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About 10 oz Let x be the amount of pure gold needed to mix with the 18karat gold In t...View the full answer

Discovering Advanced Algebra An Investigative Approach

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