$(6$ points$)$ Below you find the distillation profile of two crudes. Identify the amount that

can be obtained for each fraction, as defined: I know raw $1$ according to the solved solution is Raw $1=60\%-20\%=40\%$ and raw $2=90\%-40\%=50\%$ but how did you get those percentages please do step by step otherwise dont pick up this questrion I need to know how to get those percerntages.