Fence post are placed 3m apart from each other. How many posts will be placed over a distance of 45m?

16

45/3 = 15

unless they form a closed area, where the 1st and last posts are the same. Then it's back to 15.

To find out how many fence posts will be placed over a distance of 45m, we need to divide the total distance by the distance between each post, which is 3m.

The formula to calculate the number of posts is:

Number of posts = Total distance / Distance between each post

Plugging in the values, we get:

Number of posts = 45m / 3m

Simplifying the expression, we have:

Number of posts = 15

Therefore, over a distance of 45m, you would need to place 15 fence posts.