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Mathematics 6 Online
OpenStudy (anonymous):

A woman invested 4 times as much at 6% as she did at 9%. The total amount of interest she earns in 1 year from both accounts is $1,320. How much did she invest at each rate?

OpenStudy (mathstudent55):

Let the amount she invested at 9% = x Let the amount she invested at 6% = 4x How do you express 6% of an amount and 9% of an amount?

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