SOLUTION: The length of a rectangle is 4 inches less than 4 times the width. The perimeter is 42 inches. Find the length and the width. The length is _________inches and the width is _

Algebra ->  Length-and-distance -> SOLUTION: The length of a rectangle is 4 inches less than 4 times the width. The perimeter is 42 inches. Find the length and the width. The length is _________inches and the width is _      Log On


   



Question 1059862: The length of a rectangle is 4 inches less than 4 times the width. The perimeter is 42 inches. Find the length and the width.
The length is _________inches
and
the width is __________ inches.

Answer by Shin123(626) About Me  (Show Source):
You can put this solution on YOUR website!
l = 4w -4
l+w=42/2=21
guess and Check:
w= 5? 5*4=20-4=16 5+16=21 yes
w= 4? 4*4=16-4=12 4+12=16 no
w= 3? 3 *4=12-4=8 3+8=11 no
length=16 in.
width=5 in.