Please show me the calculations and concepts you used to get the answer to this problem. Thanks so much!

10) Tharaldson Corporation makes a product with the following standard costs Standard Quantity or Hours Standard Standard Price or Cost Per Rate Unit Direct materials Direct labor Variable overhead 6.3 ounces 2.00 per ounce$12.60 0.4 hours $11.00 per hour s 4.40 0.4 hours 6.00 per hour 2.40 The company reported the following results concerning this product in June 3,300 units 2,600 units 19,500 ounces 22,400 ounces Originally budgeted output Actual output Raw materials used in production Purchases of raw materials Actual direct labor-hours Actual cost of raw materials purchases Actual direct labor cost Actual variable overhead cost 470 hours 42,000 $ 13,300 $ 3,550 The company applies variable overhead on the basis of direct labor-hours. The direct materials purchases variance is computed when the materials are purchased $742 U The variable overhead rate variance for June is: 0 $742 F $730 F $730 U