A factory owner wants to purchase two types of machines. A and B for his factory. The machine A requires an area of 1000 \( m^2\) and 12 skilled men for running it and its daily output is 50 units, whereas the machine B requires 1200 \( m^2\) area and 8 skilled men and its daily output is 40 units. If an area of 7600 \( m^2\) and 72 skilled men be available to operate the machine, how many machines of each type should be bought to maximise the daily output.? Keeping unemployment in mind justify the values to be promoted for selection of the manually operated machine.