Barrett Chemicals manufactures four chemicals, Chem$-1,$ Chem$-2,$ Chem$-3,$ and Chem$-4,$ from a joint process. The total joint costs in May were $$564,000.$ Additional information follows:

$\backslash$table$[[,,,$If Processed Further$],[,$Units,Sales Value,atditional,$],[,$Produced,Split$-0$ff$,$Costs,Sales Values$],[$Chem$-1,290,000,$$$222,000,$$$32,900,$$$262,000$