Raymond B. answered 01/25/21
Tutor
5
(2)
Math, microeconomics or criminal justice
6X + 9(10K-X) = 684
9X - 6X = 900-684 =216
3X = 216
X= 216/3 = $7,200 invested at 6%
10K - 7200 = $2,800 invested at 9%
9x28 =252
6x72= 432
252+ 432 = $684