The total cost of one dozen sports jackets will be
[tex]950\times12=11400[/tex]The total cost of two dozen sports pants will be
[tex]1200\times24=28800[/tex]The total cost of the entire purchase is
[tex]11400+28800=40200[/tex]now, the discount given on the total transaction will be
[tex]\text{Discount}=\text{40200}\times0.2=8040[/tex]So, the total net price to the dealer will be
[tex]40200-8040=32160[/tex]Therefore, the total net price is 32160 pesos.