World Electronics is in the business of data storage.It is in the business of making DVDs.Its product line comprises of two types of DVD; namely DVD5 and DVD9. To meet demands they need to make 60,000 DVD5 and 10,000 DVD9.It uses two machines in its production.Machine 22 can make 300 DVD5 per hour and 10,000 DVD9 per hour.Machine 35 can make 4,000 DVD5 and 5,000 DVD9 per hour. It cost $180 per hour to run Machine 22 and $230 per hour to run Machine 35.To meet demand how many hours of each machine it should operate to minimize cost.