Question

The length of a rectangle is 3 times its width. The perimeter of the rectangle is 80 cm. If x = length and y=width, x + y = 80 23y 2 + y = 80 = +y 2x + 2 = 80 Зу T- 2x + 2y = 80 21

Answer 1

x = length

y = width

we have:

x = 3y

the perimeter is

`2x+2y=80`

then

`\begin{gathered} 2(3y)+2y=80 \\ \end{gathered}`