A hand made paper workshop can hire 8 craftsmen by paying them Rs 400 per person per day. The 9th craftsman demands Rs 450 per day. If this craftsman is hired then all other craftsmen must be paid Rs 450. The marginal resource (labour) cost of the 9th craftsman is
In the following question, out of the four alternatives, select the alternative which is the best substitute of the phrase. One who is determined to take full revenge for wrongs done to him