Find perimeter of table-HELP

Question

The area of a table top is 60 square feet, and twice the length is 1 foot shorter than two times the width. Find the perimeter

Answer 1

2l=2w-1

l=w-0.5

A=lw

A=(w-0.5)w

60=w^2-0.5w

w^2-0.5w-60=0

2w^2-w-120=0

(2w+15)(w-8)=0

w-8=0

w=8 feet

l=8-0.5

l=7.5 feet

P=2l+2w

P=2*7.5+2*8

P=15+16

P=31 feet