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posted by jamie lynn on Wednesday, June 13, 2012 at 8:40pm.

Splitting investments. Joan had $3,000 to invest. She invested part of it in an investment paying 8% and the remainder in an investment paying 10%. If the total income on three investments was $290, than how much did she invest at each rate?

amount invested at 8% --- x amount invested at 10% -- 3000-x .08x + .10(3000-x) = 290 .08x + 300 - .1x = 290 -.02x = -10 x = -10/-.02 = 500 so $500 invested at 8% and 2500 invested at 10%

Investment. Part of $25,000

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