Let the width be x.
Width = x
Length = 4x
Perimeter = 2(Length + Width)
Perimeter = 2(x + 4x)
Perimeter = 2(5x)
Perimeter = 10x
Given that perimeter = 50 m
10x = 50 m
x = 5m
Width = x = 5m
Length = 4x = 4 x 5 = 20 m
Answer: The dimension of the room is 5m by 20 m
