Arre, first sketch that linear programming graph roughly—corner points matter more than perfect lines, yaar. For index numbers, just remember Laspeyres and Paasche are about base year weights; if you mix them up, you'll lose marks like I lost my metro card last week. See, I teach kids who panic over details, but the exam wants the method clear, not poetry. My own kanjoos habit of saving paper by solving in margins taught me that.
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