Please first read ch7, ch8 pages 309-361 and ch9 pages 363-423 on this website --> https://books.google.com.tw/books?id=TTt-BAAAQBAJ&pg=PA363&lpg=PA363&dq=Chapter+9:+Linear+programming:+Applications+in+Marketing,+Finance,+and+Operations+Management&source=bl&ots=6NLDBzIaQJ&sig=ESVGEviaX6K66ZLNn5RZk3PpTgw&hl=en&sa=X&ved=0CCsQ6AEwAmoVChMI_Nyj_ufpxgIVzKOUCh2GHgzH#v=onepage&q=Chapter%209%3A%20Linear%20programming%3A%20Applications%20in%20Marketing%2C%20Finance%2C%20and%20Operations%20Management&f=false