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Mathematics 13 Online
OpenStudy (anonymous):

Ivan collects antique quarters and nickels. He has a total of 12 coins. The number of quarters is twice the number of nickels. Which system of linear equations represents the problem? Let q represent the number of quarters and n represent the number of nickels. q plus n equals twelve; q equals two n q plus n equals twelve; q equals two plus n two q equals twelve; n equals twelve q q plus n equals twelve; n equals two q

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