Question 646840: How do I solve this:
Sally has $25,000 to invest. She invests some money at 7% interest and the rest at 11%. If her total annual income from these two investments is $2,350, how much does she invest at each rate?
Answer by lwsshak3(11628)   (Show Source):
You can put this solution on YOUR website! Sally has $25,000 to invest. She invests some money at 7% interest and the rest at 11%. If her total annual income from these two investments is $2,350, how much does she invest at each rate?
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let x=amt invested at 7% interest
25000-x=amt invested at11% interest
..
7%x+11%(25000-x)=2350
.07x+2750-.11x=2350
.04x=400
x=400/.04
x=10000
25000-x=15000
amt invested at 7% interest=$10,000
amt invested at11% interest=$15,000
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