Jaya Terus company is currently conducting a trial design training as a debriefing of harvesting mechanization operations for its permanent employees. There are three training designs that were tried out, with the following data:

training design	duration	fees/participants	average production/year
classic class	1 day	Rp. 300.000	1 quintal
class and practice	3 days	Rp. 800.000	2,30 quintals/person
Classes, Practice and Mental Development - Discipline	7 days	Rp. 1.500.000	2,60 quintals/person

Mechanized tools have an economic life of 10 years, before the emergence of a new tool version that causes employees to be retrained. Each training design was attended by 20 participants. The selling price of the product per kilogram is Rp. 6,000, -.

Question:

From the case above, you are asked to: Choose the most profitable training design for Jaya company, provide a detailed calculation of your choices.