7 workers work in a printing press. Each gets paid Rs 450 per day. The 8th worker demands Rs 500 per day. If this worker is hired then all other workers must be paid Rs 500. The marginal resource (labour) cost of the 8th worker is _______.
____ enacted during an emergency imposed by Mrs. Indhira Gandhi, is also known as mini constitution because of important & large number of changes made to it.