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Ethane cracker versus naphtha cracker
The prompt
Compare two fictional ethylene producers. A Gulf producer uses ethane: 1.3 tonnes of ethane at USD 200 per tonne make 1 tonne of ethylene, plus USD 140 of other cash costs. A European producer uses naphtha: its net feedstock cost is USD 650 per tonne of ethylene after credits for the co-products it also sells, plus USD 150 of other cash costs. Ethylene sells for USD 950 per tonne. What is each producer's cash margin per tonne?
Your interviewer will share data as you ask for it. Ask clarifying questions, state a hypothesis, then lay out your structure out loud before you calculate.
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