human
Dina has 60 dolls. She has twice as many dolls as Ivy. 2/3 of Ivy's dolls are collectors editions. How many collectors edition dolls does Ivy have?
assistant
How many dolls does Ivy have? ** Ivy has 60/2=<<60/2=30>>30 dolls.
How many collectors edition dolls does Ivy have? ** Ivy has 30/3*2=<<30/3*2=20>>20 collectors edition dolls.
#### 20