SOLUTION: a woman invested some money at 8% and some at 9%. the interest for 1 year on the combined investment of $10,000 was $840. how much was invested at each rate.

Algebra ->  Linear-equations -> SOLUTION: a woman invested some money at 8% and some at 9%. the interest for 1 year on the combined investment of $10,000 was $840. how much was invested at each rate.      Log On


   

Question 441129: a woman invested some money at 8% and some at 9%. the interest for 1 year on the combined investment of $10,000 was $840. how much was invested at each rate.
Answer by rwm(914) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=10000
.08*x+.09*y=840
x=6000 at 8%
y=4000 at 9%