GMAT Quantitative Reasoning Practice Test 4

Jeremy paid $\mathit{W}$ dollars (or $100\mathit{W}$ cents) for $2\mathit{Q}$ steaks and therefore each steak cost him $50\mathit{W}\mathit{I}\mathit{Q}$. Jerome has a $50\%$ discount, so every steak costs him $25\mathit{W}/\mathit{Q}$. Jerome wants to buy $\mathit{R}$ steaks; it will cost him 25RW/Q.