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the total of two investments is $25,000. One amount is invested at 7% and one at 9%. The annual interest from the 7% investment is $470 more than the 9% investment. How much is invested at each rate?

Sagot :

$17,000 at 7%(interest =&1190)
$8,000 at 9%(interest =$720)
difference in interest = $1190-$720= $470