SOLUTION: Doris invested some money at 4% and some money at 7%. She invested $6,000 more at 7% than she did at 4%. Her total yearly interest from two investments was $750. How much did Doris
Algebra ->
Percentage-and-ratio-word-problems
-> SOLUTION: Doris invested some money at 4% and some money at 7%. She invested $6,000 more at 7% than she did at 4%. Her total yearly interest from two investments was $750. How much did Doris
Log On
Question 441164: Doris invested some money at 4% and some money at 7%. She invested $6,000 more at 7% than she did at 4%. Her total yearly interest from two investments was $750. How much did Doris invest at each rate? Answer by jorel1380(3719) (Show Source):
You can put this solution on YOUR website! .04x+.07(x+6000)=750
.04x+.07x+420=750
.11x=330
x=330/.11=3000
x+6000=9000
3000 was invested at 4%, 9000 was invested at 7%..
