Lisa has 18 more dresses than Ana. If the number of their dresses combined is 48, how many dresses does Ana have?
If Lisa's surplus of 18 dresses is taken away from the total, they will have 48-18 = <<48-18=30>>30 dresses in total
They would each have the same number of dresses from these 30 i.e. 30/2 = <<30/2=15>>15 dresses which is the number of dresses that Ana actually has.
#### 15