SOLUTION: Mr.Smith had $3000 invested at 5% per year. How much must he invest at 6% in order to make his total annual income $300?
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Question 95665: Mr.Smith had $3000 invested at 5% per year. How much must he invest at 6% in order to make his total annual income $300? Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! 3000*.05+X*.06=300
150+.06X=300
.06X=300-150
.06X=150
X-150/.06
X=$2500 MUST BE ADDED @ 6% TO GET $300 INTEREST PER YEAR.
PROOF
3000*.05+2500*.06=300
150+150=300
300=300
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