Question 146602: An investment of 5600 is made at an annual simple interest rate of 6.5%. How much additional money must be invested at an annual simple interest rate of 9% so that the toatl interest earned is 8% of the total investement Answer by checkley77(12569) (Show Source):
You can put this solution on YOUR website! 5600*.065+.09x=.08(5600+x)
x=8,400 invested @ 9% will stiafy the need.