SOLUTION: Amy invests a part of $8000 in bonds paying 12% interest. The remainder is in a savings account at 8%. If she receives $840 in interest for 1 year, how much does she have invested

Algebra ->  Linear-equations -> SOLUTION: Amy invests a part of $8000 in bonds paying 12% interest. The remainder is in a savings account at 8%. If she receives $840 in interest for 1 year, how much does she have invested       Log On


   

Question 280492: Amy invests a part of $8000 in bonds paying 12% interest. The remainder is in a savings account at 8%. If she receives $840 in interest for 1 year, how much does she have invested at each rate? (Show the two variable equations used to solve it and then the solution)
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let her invest x at 8%
and y at 12%
0.08x+0.12y=845
x+y=8000
0.08x+0.08y==640
0.04y=205
y=5125
x=8000-5125=2875