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Mathematics 20 Online
OpenStudy (anonymous):

Lisa Chen invested $24,000, part at 8% and the rest at 7.2%. How much did she invest at each rate if her income from the 8% investment is two thirds that of the 7.2% investment? $16,000 at 7.2% and $8,000 at 8% $12,000 at 7.2% and $12,000 at 8% $14,000 at 7.2% and 10,000 at 8% $15,000 at 7.2% and $9,000 at 8%

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