Question

The perimeter of a rectangle is 24 meters and it’s length is 3 times the width. What is the length and width of the rectangle

Answer 1

The perimeter; P = 24m

The length is 3 times the width; L = 3W
where L is length and W is width

Note that P = 2(L+W)

Substitute in the values from the given data
Therefore, 24 = 2(3W + W)

Open the bracket
24 = 6W + 2W
24 = 8W
W = 3m

Since L = 3W
L = 3(3)
L = 9m