Ivanhoe Unlimited produces four products through a joint process that incurs costs of $$178000.$ Information for these products is as follows:

$\backslash$table$[[$Product$,\backslash$table$[[$Units$],[$Produced$]],\backslash$table$[[$Sales Value$],[$at$],[$Split$-$Off$]],$If Processed Further$],[\backslash$table$[[$Final$],[$Sales$],[$Value$]],\backslash$table$[[$Further$],[$Processing$],[$Costs$]]],[$Gemini$,3290,$$$10500,$$$15030,$$$2760$