Question

Phyllis invested 12,000, a portion earning a simple interest rate of 4 1/2% per year and the rest earning a rate of 4% per year. After one year the total interest earned on these investments was $525. How much money did she invest at each rate?

Answer 1

x*9/200+(12000-x)*4/100=525
9x-8x+96000=105000
x=105000-96000

Answer 2

x=9000 at 41/2% and 3000 at 4%

Answer 3

oh pellet. i'm doing it right. i just stopped early... thanks