27,555/(1+0.185)^3
1-0.20
2 = 2y + x
2 = 2x + y
3/3x
y'=k(25-y)
4 = 2y + x
4 = 2x + y
1 = 2y + x
4+4=____8____
1 = 2x + y
82-16
_____
2
