A pair of pants costs twice as much as a shirt. The total cost of 1 pair of pants and 1 shirt is $18 . If s represents the cost of 1 shirt, which equation could you use to find the cost of 1 shirt?

Let the price of 1 shirt be represented by = sA pair of pants costs twice as much as a shirt, then the cost of pants is = 2sThe total cost of 1 pair of pants and 1 shirt is $18 , means : [tex]s+2s=18[/tex]Solving this we get,                            [tex]3s=18[/tex][tex]s=6[/tex]So, the price of 1 shirt is $6 and price of 1 pair of pants is = 2s = 2*6 = $12.