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Posted by on Thursday, October 22, 2009 at 1:47pm.

Rosa invested $8000 for one year, part ast 8% annual interest and the balance at 10% annual interest. Her total interest for the year was $700. How much money did she invest at each rate?

  • Math - , Thursday, October 22, 2009 at 2:04pm

    8000=LR + HR (lower rate $, higherrate$)
    .08*LR+ .10HR=700

    solve for LR, HR.

  • Math - , Wednesday, December 15, 2010 at 4:03am

    LR 56
    HR 70

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