One side of an isosceles triangle is 2 times larger than the other. Find the length of the shorter side

One side of an isosceles triangle is 2 times larger than the other. Find the length of the shorter side of the arms if its perimeter is 25cm.

Option number 1.

Let the side be n.

Then the base will be equal to 2n.

Since we know that the perimeter is 25 cm, we write down the equation and find out the length of the smaller side:

n + n + 2n = 25;

4n = 25;

n = 6.25.

Answer: 6.25 centimeters.

Option number 2.

Let the base be n.

Then, proceeding from the condition, already the side side will be equal to 2n.

Since we know that the perimeter is 25 cm, we write down the equation and find out the length of the smaller side:

n + 2n + 2n = 25;

5n = 25;

n = 5.

Answer: 5 centimeters.