Question

the length of each side of the square increases by 2.5 inches to form a new square with a perimeter of 70 inches. The length of each side of the original square was ____ inches

Answer 1

Answer:

The length of each side of the original square was $15$ inches

Step-by-step explanation:

Let

x------> the length side of the original square

we know that

The perimeter of a square is equal to

$P=4b$

where

b is the length side of the square

In this problem

$b=(x+2.5)\ in$

$P=70\ in$

substitute

$70=4(x+2.5)$

solve for x

$70=4x+10$

$4x=70-10$

$x=60/4=15\ in$

Answer 2

15 inches.

2.5*4=10

70-10 equal 60

60/4=15.