SOLUTION: Marcia has $18000 to invest in two different investments. She invest $10000 at 4% yearly interest in one investment .At what rate must she invest the remainder so that she earns a

Question 1111083: Marcia has $18000 to invest in two different investments. She invest $10000 at 4% yearly interest in one investment .At what rate must she invest the remainder so that she earns a yearly interest of more than $700
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
For 4% annual interest investment:
(1)
(1)
(1)
For the 2nd investment:
(2)
(2)
----------------------------------
(3)
(3)
(3)
----------------------------------
From (2):

The remainder must be invested at a rate
greater than 3.75%

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