Our aim is to balance preventative and repairs costs such that total cost is ________. 1 point Zero Maximized Unchanged Minimized 17. Question 17 Total productive maintenance rests on the following ideal(s): 1 point Prevention of equipment failures Maintainability of equipment Optional engagement of employees in the program A and B Only 18. Question 18 Loading time also includes downtime, but this is ____________ downtime 1 point Real Unknown Unplanned Planned