Delta Diamonds uses a periodic inventory system. The company had five one-carat diamonds available for sale this year: one was purchased on June 1 for $750, two were purchased on July 9 for $800 each, and two were purchased on September 23 for $850 each. On December 24, it sold one of the diamonds that was purchased on July 9. Using the FIFO method, its cost of goods sold for the year ended is:

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: