Max builds rail fences. For one one style of fence, each section use 3 vertical fence post and 6 horizontal rails. How many rails does he need for a fence that has 18 post?

Answer: For a fence that has 18 posts he needs 36 rails.

Step-by-step explanation:

Hi, to answer this question we have to use proportions:

Each section use 3 vertical fence post and 6 horizontal rails

The proportion is = 3 post / 6 rails

For 18 posts:

18 posts / x rails.

3 / 6 = 18 / x

Solving for x:

x = 18 / (3/6)

x = 36 rails

For a fence that has 18 posts he needs 36 rails.

Feel free to ask for more if needed or if you did not understand something.