A wall in Marcus's bedroom is 8 1/3 feet high and 16 1/5 feet long. If he paints 1/3 of the wall blue, how many square feet will be blue?
The area of the wall is 8 1/3 x 16 1/5 = (8 + 1/3) x (16 + 1/5) = 26/3 x 81/5 = 702/15 = <<702/15=46.8>>46.8 square feet.
So, 1/3 x 46.8 = <<1/3*46.8=15.6>>15.6 square feet of the wall will be blue. Answer: \boxed{15.6}.