Question 15If $x$ men working $x$ hours a day for $x$ days produce $x$ articles, then the number of articles (not necessarily an integer) produced by $y$ men working $y$ hours a day for $y$ days is:$\dfrac{x^3}{y^2}$$\dfrac{y^3}{x^2}$$\dfrac{x^2}{y^3}$$\dfrac{y^2}{x^3}$$y$