Question
15 lamp posts are placed along a road at equal distances. The distance between the third and the seventh lamp post is 20 m.
  1. What is the distance between 2 lamp posts?
  2. What is the distance between the first and the last lamp post?
4 m
(a)

Click button first when a symbol is required. X

(b)

Click button first when a symbol is required. X

15 lamp posts are placed along a road at equal distances. The distance between the third and the seventh lamp post is 20 m.
  1. What is the distance between 2 lamp posts?
  2. What is the distance between the first and the last lamp post?