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Posted by on Thursday, October 18, 2012 at 10:04pm.

a total of $1381.8 per year is received in interest from three investments. the interest rates for the three investments are 4.9%, 7.5%, and 8.6%. the 4.9$ investment is half of the 7.5% investment and the 7.5% investment is 1400 less than the 8.6% investment.
find the amount of the 4.9% investment in units of dollars
find the ammount of the 7.5% investment in units of dollars
find the amount of the 8.6% investment in units of dollars

  • Algebra 2 - , Friday, October 19, 2012 at 11:37am

    let the three amounts be x,y,z respectively.

    .049x + .075y + .086z = 1381.80
    x = y/2
    y = z-1400

    x = 3400
    y = 6800
    z = 8200

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