question: Olivia uploaded 72 pictures to Facebook.  She put the same number of the pics into 8 albums.  3 of the albums were selfies only and 2 of the albums were portraits.  How many portraits and selfies did she have?
answer: Olivia had 72 pictures / 8 albums = <<72/8=9>>9 picture per album.
  Olivia had 3 selfie albums * 9 pictures = <<3*9=27>>27 pictures.
  Olivia had 2 portrait albums * 9 pictures = <<2*9=18>>18 pictures.
  The total of portraits and selfies for Olivia is 27 + 18 = <<27+18=45>>45 pictures.
  #### 45