Tiffany has white and black shoes in her shoe box. The possibility of her pulling out a white pair of shoes is 2/5. What is the chance of Tiffany randomly pulling out a black pair of shoes?
Since there are only white and black shoes in the shoe box, the probability of pulling out a black pair of shoes is 1 minus the probability of pulling out a white pair of shoes.
Therefore, the chance of Tiffany randomly pulling out a black pair of shoes is 1 - 2/5 = 3/5 or 0.6, which is 60%.