Blasto. Inc., operates several mines. At one. a typical batch of ore run through the plant yields three products lead, copper and manganese. At the split-off point, the intermediate products cannot be sold without further processing. The lead from a typical batch sells for exist40,000 after incurring additional processing costs of exist12,000. The copper is sold for exist80,000 after additional processing costs of exist10,000, and the manganese yield sells for exist60,000 but requires additional processing costs of exist18,000. The joint costs of processing the raw ore, including the cost of mining, are exist100,000 per batch. Use the estimated net realizable value method to allocate the joint processing costs