Question

How many 12 Feet 2 x 4 would be needed for Bottom Plates and Double Top Plates on a Building 25' x 50' ?

Answer 1

Your question has confusing details. So, I will rephrase as:

How many 2' x 4' would be needed for Bottom Plates and Double Top Plates on a Building 25' x 50' ?

Answer:

12.5 plates

Step-by-step explanation:

Given

Building dimension:

$Length = 25ft$

$Width = 50ft$

Plates

$Length = 2ft$

$Width= 4ft$

To do this, we have to divide the dimension of the building by the dimension of the plates

So, we have:

$n = \frac{Length\ of\ Building}{Length\ of\ Plates}$

and

$n = \frac{Width\ of\ Building}{Width\ of\ Plates}$

For the length, we have:

$n = \frac{25}{2}$

$n = 12.5$

For the width, we have:

$n = \frac{50}{4}$

$n = 12.5$

So, 12.5 of the plates are needed