(a) suppose fiat recently entered into an agreement and plan of merger with case for $4.3 billion. prior to the merger, the market for four-wheel-drive tractors consisted of five firms. the market was highly concentrated, with a herfindahl-hirschman index of 2,765. case's share of that market was 22 percent, while fiat comprised just 12 percent of the market. if approved, by how much would the postmerger herfindahl-hirschman index increase?

Doogan corporation makes a product with the following standard costs: standard quantity or hours standard price or rate direct materials 2.0 grams $ 7.00 per gram direct labor 1.6 hours $ 12.00 per hour variable overhead 1.6 hours $ 6.00 per hour the company produced 5,000 units in january using 10,340 grams of direct material and 2,320 direct labor-hours. during the month, the company purchased 10,910 grams of the direct material at $7.30 per gram. the actual direct labor rate was $12.85 per hour and the actual variable overhead rate was $5.80 per hour. the company applies variable overhead on the basis of direct labor-hours. the direct materials purchases variance is computed when the materials are purchased. the materials quantity variance for january is: