14 lamp posts are placed along a road at equal distances. The distance between the ninth and the thirteenth lamp post is 28 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 ninth and the thirteenth lamp post
= 13 - 9
= 4
Distance between 2 lamp posts
= 28 ÷ 4
= 7 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 7
= 91 m
Answer(s): (a) 4 m; (b) 91 m