What is the length of the third side?

Question

The longest side of a triangle is two more than twice the shortest. The third side is twice the shortest. The perimeter is twenty-seven. What is the length of the third side

Answer 1

Let x = the length of the shortest side

Let 2x = the length of the third side

Let 2x + 2 = the length of the longest side

P = a + b + c

27 = x + 2x + 2x + 2

25 = 5x

x = 5

2x = 10

2x + 2 = 12