Answer:
Length= 30 in
Width= 10 in
Step-by-step explanation:
Let the width of the rectangle be x in.
Length of rectangle
= 3 (width)
= 3x
Perimeter of rectangle= 2(length) +2(width)
80= 2(3x) +2(x)
80= 6x +2x
8x= 80 (simplify)
x= 80 ÷8 (÷8 on both sides)
x= 10
Thus width of rectangle= 10 in
Length of rectangle
= 3(10)
= 30 in
