Please show calculations, it is for learning purposes

Logan Company produces several products from processing wolvotron, a rare mineral. Joint processing costs total $30,000 per tonne, one-third of which is allocated to the product evamantium. The evamantium produced from a tonne of wolvotron can either be sold at the split-off point for $40,000, or be processed further at a cost of $13,000 into adamantium and then sold for $60,000. Required: Should the company sell evamantium or adamantium? O Evamantlum O Adamantium