Homework Help: math

Posted by zach on Wednesday, April 21, 2010 at 9:26pm.

With income earned by selling the rights to his life story, an actor invests some of the money at 3% and 30,000 more than twice as much at 4%. The total annual interest earned from the investments is $5600. How much is invested at each rate?

math - Reiny, Wednesday, April 21, 2010 at 9:46pm
let the amount invested at 3% be x
then the amount invested at 4% = 2x+30000

solve for x

.03x + .04(2x+30000) = 5600
math - zach, Wednesday, April 21, 2010 at 9:47pm
Thank you so much Reiny.
math - Reiny, Wednesday, April 21, 2010 at 9:48pm
welcome

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