The perimeter of the rectangle is 80 cm. What are the length and width of the rectangle if the width

The perimeter of the rectangle is 80 cm. What are the length and width of the rectangle if the width is 4 times less than the length?

The solution of the problem:
We will solve the problem using an equation with one unknown.
1. The width of the rectangle is x centimeters.
2. Let’s calculate what is the length of the rectangle.
x * 4 = 4x centimeters.
3. Let’s compose and solve the equation.
(x + 4x) * 2 = 80;
10x = 80;
x = 80/10;
x = 8;
4. Find the width of the rectangle.
x = 8 centimeters.
5. What is the length of the rectangle?
4 * x = 4 * 8 = 32 centimeters.
Answer: The width of the rectangle is 8 centimeters, the length of the rectangle is 32 centimeters.