sent: \begin{tabular}{lr} & Cost \\ \cline { 2 - 2 } Joint process cost & $1,200 \\ Further processing cost (wool fiber to yarn) & 520 \\ Further processing cost (crude lanolin to cream) & 640 \end{tabular} (a) proportion to 1 decimal place, e.g. 0.2 and final answers to 0 decimal places, e.g. 5,125 .) (b) decimal places, e.g. 15.25.)