SOLUTION: Desa invested a certain amount of money at 4% interest and $1500 more than that amount at 7%. Her total yearly interest was $435. How much did she invest at each rate?

SOLUTION: Desa invested a certain amount of money at 4% interest and $1500 more than that amount at 7%. Her total yearly interest was $435. How much did she invest at each rate?

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Question 97143: Desa invested a certain amount of money at 4% interest and $1500 more than that amount at 7%. Her total yearly interest was $435. How much did she invest at each rate?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
.04X+.07(X+1500)=435
.04X+.07X+105=435
.11X=435-105
.11X=330
X=330/.11
X=3000 AMOUNT INVESTED @ 4%
3000+1500=4500 INVESTED @ 7%
PROOF
.04*3000+.07*4500=435
120+315=435
435=435
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