SOLUTION: How would I solve this word problem? Katy was given $35,000 when she retired. She invested some at 7% interest and the rest at 9% interest. If she earned $2,910 in interest in

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Question 859525: How would I solve this word problem?
Katy was given $35,000 when she retired. She invested some at 7% interest and the rest at 9% interest. If she earned $2,910 in interest in one year, how much was invested in each account?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Let x represent amount at 9%

 .09x + .07(35000-x) = $2910

               x = (2910 - 2450)/.02

               x = 460/.02 = $23,000 at 9%  and $12,000 at 7%  35000-23000+=+12000

CHECKING our answer***

$2070 + $840 = $2910

Wish You the Best in your Studies.