Task 1. Imagine that you are preparing a project with your friend. You have found some interesting material for the presentation and you want to read this text to your friend. You have

63 км/ч = 630/36м/c    
630/36м/c*36с=630м 
3км/ч=30/36м/c     
30/36м/c*36c=30м
630-30=600м - длина поезда