Please explain

[Parent 1]

Thirty-six posts were spaced evenly along a road that was 1.575km long.What was the distance in metres between each pair of posts?

[hermanmunster]

what have you tried so far?

[Parent 1]

I have divided 1575m with 36 for 43.75
But the answer is 45

[hermanmunster]

might be worth you drawing it out to work out how many gaps there are - remember that with a fence there are always one fewer boards than there are posts.

[Parent 1]

Just got it now the last post won’t be counted to mark the distance so there will be 35 posts so 1575/35=45

[hermanmunster]

[Yes]

Diagrams are our best friends!

[Surferfish]

Agree that diagrams are useful in questions like this.

Just a tip though, it is not necessary to draw out all 36 posts, which might be a bit laborious. Drawing just 3 or 4 posts should be enough to prove the point that there are 1 less panels than posts.

[yoyo123]

I love a nice diagram!