SOLUTION: Miguel receives $306 per year in simple interest from three investments totaling $3200. Part is invested at 8%,Part at 9% and part at 10%. There is $1900 more invested at 10% than

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Miguel receives $306 per year in simple interest from three investments totaling $3200. Part is invested at 8%,Part at 9% and part at 10%. There is $1900 more invested at 10% than       Log On


   

Question 906812: Miguel receives $306 per year in simple interest from three investments totaling $3200. Part is invested at 8%,Part at 9% and part at 10%. There is $1900 more invested at 10% than at 9%. Find thee amount invested at each rate.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
0.08*x+0.09*y+0.1*z=306,
z=y+1900,
x+y+z=3200,
x+y+y+1900=3200,
x+2*y=1300
x=500., y=400., z=2300.