Question 839243
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Hi,
Re: reply. One needs to solve the system of EQs by substitution to find x and y.
Write a system of two equations in two variables to solve each problem.
Let x and y represent amount saved at 8% and 9% respectively
    x  + y = $10,000    0r  x = $10,000 - y 
 .08x + .09y = $840
 .08(10,000 - y) + .09y = 840  |solving the system of EQs by substitution
             .01y = 840-800
              .01y = 40
                 y = $4000  and x = $6000