The Karnataka government launched the Bengaluru city logo- making Bengaluru the first Indian city to get its own logo - on 24 December 2017 for branding the city as a
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 _______.