14 lamp posts are placed along a road at equal distances. The distance between the seventh and the tenth lamp post is 30 m.
- What is the distance between 2 lamp posts?
- What is the distance between the first and the last lamp post?
(a)
Number of intervals between the seventh and the tenth lamp post
= 10 - 7
= 3
Distance between 2 lamp posts
= 30 ÷ 3
= 10 m
(b)
Number of intervals between first and the last lamp post
= 14 - 1
= 13
Distance between the first and the last lamp post
= 13 x 10
= 130 m
Answer(s): (a) 3 m; (b) 130 m