Asked by RNRH

Glenn invested some money is a certificate of deposit (CD) with an annual yield of 9%. He invested twice as much money in a mutual fund with an annualy yield of 12%. His interest from the two investments at the end of the year was $396. How much money was invested at each rate? (l=prt)
Answered by Reiny
9% investment ---- $x
12% investment ---$ 2x

solve
.09x + .12(2x) = 396

I suggest multiplying each term by 100
9x + 12(2x) = 39600
etc
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