SOLUTION: If $8000 is invested at 7%, how much must be invested at 9% to have a total interest of $1550?

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: If $8000 is invested at 7%, how much must be invested at 9% to have a total interest of $1550?      Log On


   

Question 656804: If $8000 is invested at 7%, how much must be invested at 9% to have a total interest of $1550?
Answer by jhadipak(3) About Me  (Show Source):
You can put this solution on YOUR website!
Solution:
we have given
8000*7% + x* 9% = 1550
so, 8000*7/100 + x* 9/100 = 1550
=> 80*7 + x(0.09) = 1550
=> 560 + x(0.09) = 1550
=> x(0.09) = 1550 - 560
=> x = 990/0.09
= $11000
Hope this will help you!