Bob is a wheat farmer, but also likes to give fiddle lessons. One spring day, Bob faces a choice: spend ten hours planting wheat or spend ten hours giving fiddling lessons. Suppose Farmer Bob charges $35 per hour for his fiddle lessons. Suppose further that, in ten hours, Bob can plant $280 worth of seeds that he expects will yield $600 worth of wheat. (Assume there are no other costs involved with either activity.) After breakfast, Bob decided to spend the day giving fiddle lessons. Farmer Bob's economic profit from his ten hours of giving fiddling lessons is

Turrubiates corporation makes a product that uses a material with the following standards standard quantity 8.0 liters per unit standard price $2.50 per liter standard cost $20.00 per unit the company budgeted for production of 3,800 units in april, but actual production was 3,900 units. the company used 32,000 liters of direct material to produce this output. the company purchased 20,100 liters of the direct material at $2.6 per liter. the direct materials purchases variance is computed when the materials are purchased. the materials quantity variance for april is: