Julian has 400 legos and wants to make lego models of two identical airplanes. If each airplane model requires 240 legos, how many more legos does Julian need?
How many legos are required for the two airplanes? ** Two aeroplanes require 240 legos/airplane x 2 airplanes = <<240*2=480>>480 legos.
How many more legos does Julian need? ** Julian needs 480 legos - 400 legos = <<480-400=80>>80 more legos
#### 80