i need help on this question:posts on the motorway are 100 m apart.Find in km the distance between 11 of the posts.?

Depending on the width of the posts, just times 100 x 11 = 1100 m
1.1 km

If you have 'p' posts, there are 'p - 1' spaces between them.

so, 11 posts => 10 spaces

i.e. 10 x 100 metres => 1000 metres = 1 km

:)>

There are 11 posts, but 10 spaces between them.
Each space is 100m
| 100m | 100m | 100m | 100m | 100m | 100m | 100m | 100m | 100m | 100m |

10 x 100m = 1000m = 1km

Answer:
1 km

1 km

You just times 100 by 11

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