Janice owns a business that builds and sells custom skateboards. Last year she sold 480 skateboards for $200 each. To make the boards she purchased wood, wheels, paint, and other components that cost $36 per board. She hired two part-time employees whom she paid $6000 each. She also invested in tools and manufacturing equipment that cost $13400. (a) Calculate Janice's total revenue. (b) Calculate Janice's total value added. (c) Calculate Janice's total profit. (d) Explain why your answers for parts a, b, and c above are different.