SOLUTION: Jeremy has $6000 invested at 6%. How much more must he invest at 10% to realize a return of 9% with thks

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Question 726926: Jeremy has $6000 invested at 6%. How much more must he invest at 10% to realize a return of 9%
with thks
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
6000-----------6%
x-------------10%

total ------------9%
Total interest
6000*6%+10%x= (x+6000)9%
multiply by 100
36000+10x=9x+54000

10x-9x=54000-36000
x=18000