the perimeter of an equilateral triangle is 60 . if one of the sides of the equilateral triangle is the side of an isosceles triangle of perimeter 50 , then how long is the base of isosceles triangle ?
"the base of the isosceles triangle is 50 - 20 - 20 = 10 units the answer is b ."
subtract(subtract(50, divide(60, const_3)), divide(60, const_3))