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March 26, 2017

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invests 7000 for 1 year part at 5% part at 11% and the remainder at 13% total amount of income from these investments was $774. The amount of money invested at 13% was $1200 more than the amounts invested at 5% and 11% combined find the amount invested at each rate

  • Precalculus - ,

    if x at 5%, y at 11% and z at 13%,

    x+y+z = 7000
    .05x + .11y + .13z = 774.00
    z = 1200+x+y

    (x,y,z) = (1300,1600,4100)

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