SOLUTION: Stonewall earns a year-end bonus of $6000 and puts it in 3 different accounts Ecobank, Stanbic Bank and Fidelity Bank that earns him a total of $522 in simple interest at the end o

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Stonewall earns a year-end bonus of $6000 and puts it in 3 different accounts Ecobank, Stanbic Bank and Fidelity Bank that earns him a total of $522 in simple interest at the end o      Log On


   



Question 1183157: Stonewall earns a year-end bonus of $6000 and puts it in 3 different accounts Ecobank, Stanbic Bank and Fidelity Bank that earns him a total of $522 in simple interest at the end of the year. The interest rate is 3%, 5% and 6% respectively.If Mr. Stonewall invested $1200 more in Fidelity Bank than in Ecobank, find the amount of money Mr. Stonewall invested in Ecobank, Stanbic Bank and Fidelity Bank
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
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Stonewall earns a year-end bonus of $6000 and puts it in 3 different accounts Ecobank, Stanbic Bank and Fidelity Bank
that earns him a total of $522 in simple interest at the end of the year. The interest rate is 3%, 5% and 6% respectively.
If Mr. Stonewall invested $1200 more in Fidelity Bank than in Ecobank, find the amount of money Mr. Stonewall
invested in Ecobank, Stanbic Bank and Fidelity Bank
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With the given data, the problem HAS NO solution in positive real numbers.



Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
             RATE       QUANT.                    INTEREST

Econo        0.03      6000-x-(x+1200)=4800-2x    0.03(4800-2x)
Stanbic      0.05       x                         0.05x
Fidelity     0.06       x+1200                    0.06(x+1200)
TOTAL                   6000                      522

highlight_green%280.03%284800-2x%29%2B0.05x%2B0.06%28x%2B1200%29=522%29
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Simplifying and solve for x, amount deposited in Stanbic Bank would be 6120 which makes no sense. No solution in real, positive numbers.