How to find the optimal values of a dual problem.

50 Views Asked by At

So i have this question with this answer and I am not sure if the answer sheet is wrong.

enter image description here

I have no problems getting to the dual. However the answer sheet states that y1=18.75 and y2=26.25.

I get that y1=26.25 and y2=18.75

by rearranging the constraints of the dual

y2=45-y1 and y2=150-y1

then 45-y1=150-y1

and y1= 26.25.

Am i correct and the answer sheet is wrong? Thanks!