Question 1006953
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E=amount at 8%; T=amount at 12%
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E+T=2000
E=2000-T
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0.08E=0.12T
0.08(2000-T)=0.12T
160-0.08T=0.12T
160=0.20T
800=T
ANSWER 1: $800 was invested at 12%.
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E=$2000-$800=$1200
ANSWER 2: $1200 was invested at 8%.
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Total interest=0.08($1200)+0.12($800)=$96+$96=$192
ANSWER 3: Total interest was $192.