
Patrick B. answered 08/13/19
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Math and computer tutor/teacher
X+Y = 50000
0.08X + 0.12Y = 4500
0.08X + 0.12 ( 50000 - X) = 4500
8x + 12(50000 - x) = 450000
8x + 600000- 12x = 450000
-4x = 450000-600000
-4x = -150000
x=37500
y = 12500