SOLUTION: Stan invested $5,000, part at 8% and part at 17%. If the total interest at the end of the year is $490, how much did he invest at 8%?
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Question 62357: Stan invested $5,000, part at 8% and part at 17%. If the total interest at the end of the year is $490, how much did he invest at 8%? Answer by checkley71(8403) (Show Source):
You can put this solution on YOUR website! .08X+.17(5000-X)=490
.08X+850-.17X=490
-.09X=-360
X=-360/-.09
X=$4000 INVESTED @ 8% & THE REST 5000-4000=$1000 WAS INVESTED @ 17%
PROOF
.08*4000+.17*1000=490
320+170=490
490=490
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