Two product are manufactured 1 sequentially on two machines , the time available in each is 8 hrs per day and may be increase by 4hrs if necessary at an additional cost of $ 100 per hr. A table below gives the production rate on two machine as well as the production per unit of the two product's

item.            product1           product 2

machine1         5                          5

machine 2        8                          4

price/unit $    110                    118

Determine the optimum production schedule and recommended use of overtime (if any) urgently use graphical method.