conversations.from: human
conversations.value: A city has a population of 300,000.  50,000 people immigrate to the country and then 30,000 people leave.  After that 1/8 of the population gets pregnant and 1/4 of those people have twins.  How many people are there after the births?
  Give me a solution to this problem
conversations.from: assistant
conversations.value: There was a net immigration to the country of 50,000-30,000=20,000
  So the total number of people before birth is 300,000+20,000=320,000
  That means 320,000/8=40,000 get pregnant
  So 40,000/4=10,000 have twins
  So that means they have 10,000*2=20,000 children
  There are 40,000-10,000=30,000 children from single births
  So the total number of people is 320,000+30,000+20,000=370,000