SOLUTION: Mr.Cooper invested a sum of money at 6%. He invested a second sum, $150 more than the first, at 3%. If his annual income was $54, how much did he invest at 3%?

Question 890490: Mr.Cooper invested a sum of money at 6%. He invested a second sum, $150 more than the first, at 3%. If his annual income was $54, how much did he invest at 3%?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Mr.Cooper invested a sum of money at 6%. He invested a second sum, $150 more than the first, at 3%. If his annual income was $54, how much did he invest at 3%?
***
let x=sum of money invested at 6%
x+150=sum of money invested at 3%
6%x+3%(x+150)=54
.06x+.03x+4.5=54
.09x=49.5
x=550
x+150=700
how much did he invest at 3%? $700
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