A ceramic cutlery production process constitutes three (3) main operations: moulding, curing and painting. The defective rates for the operations are 1.5%, 4% and 7% respectively. The plant operates a single 8 hour shift a day and the workers are afforded 45 minutes break per shift. Assuming a weekly demand of 2000 pieces, a five (5) day working week and 93% plant efficiency. Determine:

2.1. Plant rate.

2.2. Number of good units produced station 2.

2.3. Defectives at station 3.

2.4 Calculate the cost of defects at station 1 if each defect costs R20.