human
Lisa has 18 more dresses than Ana. If the number of their dresses combined is 48, how many dresses does Ana have?
assistant
How many dresses does Lisa 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
How many dresses does Ana have? ** 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