The length of one side of the rectangle is 9/20 m longer than the other. What is the smaller side

The length of one side of the rectangle is 9/20 m longer than the other. What is the smaller side of a rectangle if its perimeter is 12.1 m?

Let the length of the side be x centimeters, then its width is (x + 9/20) centimeters. We know that the perimeter of the rectangle is 12.1 meters. Let’s make the equation:

2 * (x + x + 9/20) = 12.1;

x + x + 9/20 = 12.1: 2;

x + x + 9/20 = 6.05;

2 * x + 9/20 = 6.05;

2 * x + 0.45 = 6.05;

2 * x = 6.05 – 0.45;

2 * x = 5.6;

x = 5.6: 2;

x = 2.8 meters – the length of the longer side of the rectangle;

2.8 * 0.45 = 1.26 meters – the length of the smaller side of the rectangle.

Answer: 1.26 meters.