Determine the missing amounts.

Determine the missing amounts.

$\backslash$table$[[\backslash$table$[[$it Selling$],[$Price$]],,\backslash$table$[[$Unit Variable$],[$Costs$]],,\backslash$table$[[$Unit Contribution$],[$Margin$]],\backslash$table$[[$Contribution$],[$Margin Ratio$]],],[$$$500,,$$$300,$$$,($a$),,\%($b$)],[$$$500,$$$,,($c$),$$$120,,\%($d$)],[,$$$,,($f$),$$$875,35,\%$