Question

Two equal sides of a triangle are each 5 meters less than twice the third side.If the perimeter of the triangle is 55 meters,find the length of its sides?

Answer 1

Let two sides of a triangle have a length x. third side of a triangle be (x-5). Perimeter of a triangle =x+x+x-5=3x-5=55 m=>3x=60 =>x=20m. so length of its sides are 20m,20m and 15m. Hope it helps you...