Tasty Resturant sells 4,000 plates of food each week. Among the costs are waitress wages, $22,000; resturant manager salaries, $24,000; food cost, $39,000; baverages ; $ 18,000,packaging and claening supplies costs, $26,000, cooking equipments: $38,000. Using this information, compute: (a) prime costs and (b) conversion costs.