Spartan Chemicals manufactures G-1, G-2, and G-3 from a joint process. Each gas can be liquefied and sold for a higher price. Data on the process are as follows: Required: Determine the value of the missed item. (Do not round intermediate calculations.) The joint costs of $180,000 for G-1 is the portion of the total joint cost of $360,000 that had been allocated to G-1