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Posted by on Wednesday, September 15, 2010 at 12:44pm.

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Toshiro Hashimoto invested some money at 4.5% simple interest and $1000 more than four times the amount at 6%. His total annual income for one year from interest on the two investments was $801. How much did he invest at each rate?

  • Math - , Friday, September 17, 2010 at 5:27pm

    X dollars @ 4.5 %
    (4x + 1000) dollars @ 6%

    0.04x + 0.06(4x + 1000) = 801
    0.285x = 801
    x = 801/0.285 = $ 2600 @ 4.5%

    4x + 1000 = 4 * 2600 + 1000 = $ 11400
    @ 6%
























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