Question 21Right $\triangle ABC$ has $AB=3,$ $BC=4,$ and $AC=5.$ Square $XYZW$ is inscribed in $\triangle ABC$ with $X$ and $Y$ on $\overline{AC},$ $W$ on $\overline{AB},$ and $Z$ on $\overline{BC}.$ What is the side length of the square? $\dfrac{3}{2}$$\dfrac{60}{37}$$\dfrac{12}{7}$$\dfrac{23}{13}$$2$
