Question

The length of a rectangle is five inches less than twice its width. If the rectangle has a perimeter

of 80 inches, find the length and width.
I need 2 answers.

Answer 1

Hi there!

Your answer is:

width=15

Length=25

Explanation:

L=2w-5

P=80

Perimeter formula

L+L+W+W=P

(2w-5)+(2w-5)+w+w=80

6w-10=80

+10

6w=90

/6

w=15

Plug in width in length formula

L=2w-5

2(15)-5

30-5

L=25