One side of a parallelogram is 4 times larger than the other, and its perimeter is 30 m. What are the sides of a parallelogram?

In order to find what the sides of the parallelogram are equal to, we will compose and solve the equation.
Let’s see what we know from the condition. The condition states that one side of the parallelogram is 4 times larger than the other, and its perimeter is 30 meters.
Let’s denote by x cm the length of one of the sides of the parallelogram, then the length of the other is 4x cm.
Formula for finding the perimeter:
P = 2 (a + b);
2 (x + 4x) = 30;
x + 4x = 30: 2;
5x = 15;
x = 15: 5;
x = 3 meters length of one side and 4 * 3 = 12 meters length of the second side.