Question

Find the width of a rectangle with a perimeter of 90 and a length of 15

Answer 1

perimeter=P=2L+2W=90

length=L=15

so we have 2L+2W=90
and L=15
2(15)+2W=90
solve for W

Answer 2

2w = 90 - 2*15
= 60
w = 30

width is greater than length
maybe they shpould be reversed

Answer 3

15+W=90/2 (divided both sides by 2)

15+W=45
W=45-15=30

Answer 4

x=width
2x+30=90
2x=60
x=30
width = 30