if you do not know the answer do not answer the question because I will not post the question again

please read these questions very well

and tell me the reason why we add the cost in the first question and why we substruct the cost in the second question.

when must I have to add the cost and when must I havw to substract cost from the answer.

what is the differences between two costs

the cost in the first page or question

and the cost in the second page

xyz company make deasion buy decision the com will putchase 100000 ittens at cost of 4500 each. with prob of 0,73 and 0,27 prob of 70000 itens at 1500 cost / If xyz compony gives make decision, the company will produce 85000 items at a cost of 5700 with prob 0,74 and with 0,26 prob of 60000 itens at $740. Make a deciskn if ABC purchases new technology (alfernative A) the Company will have sales of 100,000 items at $10 cach with prob 0,94 and 0,56 probability of 60000 riems at $510. If ABC hiries New experst (alternative B ) the compony wH have sales of 85000 items at $720 with ore