Question

ALGEBRA:
The perimeter of a rectangle is 96cm. The longest side is 3 times as long as the shorter side.

Form an equation to find the length of the longest side of the rectangle.

- How do I figure out this and similar question.. steps please!

Answer 1

x- width
3x- length
\[2\times(x+3x)=96 cm\] - perimeter

Answer 2

\[2x+6x=96; 8x=96; x=12cm\]-tkis is width

the length is \[3x=3 \times 12 = 36cm\]