<human>:  There were 30 women and 20 men who attended the party. After few hours, 2/5 of the total number of people left. If 9 men left the party, how many more women stayed at the party than men?
<bot>: How many people were at the party? ** There were 30 + 20 = <<30+20=50>>50 attendees at the party.
How many people left the party? ** A total of 50 x 2/5 = <<50*2/5=20>>20 people left the party.
How many men and women left the party? ** Nine of those who left were men while 20 - 9 = <<20-9=11>>11 of them were women.
How many women stayed at the party? ** So, 30 - 11= <<30-11=19>>19 women stayed at the party.
How many men stayed at the party? ** And 20 - 9 = <<20-9=11>>11 men stayed at the party.
How many more women than men stayed at the party? ** Thus, 19 - 11 = <<19-11=8>>8 more women than men stayed at the party.
#### 8