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ken invested a sum of money at 4%. He invested a second sum, $250 more than the first sum at 6%. If his total annual income was $90, how much did he invest at each rate

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Answer:

mrs. carter invested a sum of money at 4 %. she invested a second sum, $250 more than the first sum,at 6%. if the total annual income was $90, how much did she invest at each rate?

.04x+.06(x+250)=90

.04x+.06x+15=90

.10x=90-15

.10x=75

x=75/.10

x=$750 amount invested at 4%

750+250=$1,000 invested at 6%

Proof:

.04*750+.06*1,000=90

30+60=90

90=90

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