SOLUTION: An actor invests some money at 6​%, and ​$35000 more than three times three times the amount at 7%. The total annual interest earned from the investment is ​$380
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Question 987840: An actor invests some money at 6%, and $35000 more than three times three times the amount at 7%. The total annual interest earned from the investment is $38090. How much did he invest at each amount? Use the six-step method. Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! x at 6%
3x+35,000 at 7%
.06x + (.07)(3x+35000)=38090
.06x+ .21x+2450=38090
0.27x=$35640
x=$132,000
3x+35000=$431,000
;
Check
132000@6%=$7920
431000@7%=$30170
Total is $38090
