First, you need to set up the problem with the information given. The cost of the skirts and art supplies must equal $<<50=50>>50.
Since we know that the cost of the skirts is the same price and that she bought art supplies for $20, we can set up an equation: 2x + 20 = 50, with x being the cost of the skirts.
To solve the equation, subtract 20 from both sides, to give you the new equation: 2x = 30.
Solve for x by dividing both sides of the equation by 2, 2x/2 = 30/2 gives you x = 15.
Therefore, each skirt cost $<<15=15>>15.
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