The answer is 15 if I am not mistaken.If you multiply the amount of legs on each stool (3), and multiply it by the five stools he made, it will equal to 15.
The bisector of an angle of a triangle divides the opposite side into segments that are proportional to the adjacent sides ⇒ AB/BC = AD/DC 36/27 = (42-x)/x 36x = 27(42-x) 36x = 1134 - 27x 36x + 27x = 1134 63x = 1134 x = 1134/63 x = 18
