Thelma invested 50,000 in 3 different investments, at 6%, 7% and 9%, with 10,000 more in 9% than in 6%. If at the end of one year she received interest of $3,950 on her investments, how much did she invest in each of her 3 investments?
HINT: Make a system
x = 6% amount
x+10000 = 9% amount
50000 - x -x -10000 = 7% amunt
.06 x + .09(x+10000) + .07(50000-x-x-10000) = 3950
solve for x then you can compute the other amounts listed above
