The perimeter of a rectangle is 50 cm and the length is 4 cm longer than the width. Write and solve the system of equations using the substitution method.
A. width = 10 cm, length= 14 cm
B. width = 10 1/2 cm, length= 14 1/2 cm
C. width = 11 cm, length= 15 cm
D. width = 23 cm, length= 27 cm

Question

The perimeter of a rectangle is 50 cm and the length is 4 cm longer than the width. Write and solve the system of equations using the substitution method.
	A.	width = 10 cm, length= 14 cm
	B.	width = 10 1/2 cm, length= 14 1/2 cm
	C.	width = 11 cm, length= 15 cm
	D.	width = 23 cm, length= 27 cm

anonymous · Answer

l + w =50
l = w +4
w+4+w=50
w= (50-4)/2 =23
l = 23+4= 27