... eachmillion barrels of light crude processed produces 0.21million barrels of fuel oil, etc. Thus, processing L mil-lion barrels of light crude and D million barrels of darkcrude produces 0:2 1L ... conceptually and computationally. Imagine a cash register drawer witheight compartments, labelled 1 to 8, for pennies, nick-els, dimes, quarters, dollar bills, 5 dollar bills, 10 dollarbills, and ... variables for Example 1 fol-lows.Let L the number of million barrels of light crudeto process.Let D the number of million barrels of dark crudeto process.The values of decision variables...