1.- The company Aceros y Lacidos S.A." produces high quality steel foiled rolls. The manufacturing process is as follows: Raw ---> aceration ---- Hot ---> pickling -----> Cold ----> foiled material rolled rolled Rolls a) The raw material (metal) is melted in the Aceration section to form ingots, these are passed through rollers in the Hot Rolled section to form the steel sheet, in this process an oxide layer is formed on the sheet which is removed in the Pickling section by passing the sheet through an acid bath. Finally, in the cold rolling sections, the desired thickness is given to the sheet by passing it through other rollers. In the hot rolling section, there is a machine that controls the rollers through which the ingots are passed to reduce them to reel rolls. Sometimes this machine breaks down while it is processing a hot ingot, the time to give corrective maintenance to the machine is 2 hours on average, so the ingot cools and it is necessary to remelter it before processing it again, this causes a cost of 10,000 Based on statistics, it has been observed that thanks to corrective maintenance only 5% of the times the machine breaks down, it breaks down again when processing a new ingot, on the other hand, when the machine is in good condition, only 80% of the times it continues in the same conditions when processing the next ingot. A preventive maintenance plan is currently being studied to increase this latter percentage to 95%. The cost of this plan is estimated at 1,000,000 per month If 2,000 ingots are produced per month, would it be affordable to adopt the preventive maintenance plan