conversations.from: human
conversations.value: I would love to understand how to solve this problem: Of the 100 soccer balls that Nova went to inflate, 40 percent had holes in them and could not inflate, while 20% of the remaining balls were overinflated and exploded. How many balls were inflated successfully and could be used?
  Can you explain?
conversations.from: assistant
conversations.value: If 40% of the balls had holes in them and could not inflate, their number was 40/100*100= 40
  The remaining balls that Nova could inflate were 100-40 = 60
  While inflating, 20% of the good soccer balls were overinflated and exploded up, a total of 20/100*60 = 12
  The number of soccer balls that inflated successfully and could be used is 60-12 = 48