If for a perfectly competitive firm, price is Rs. 60, output is 300 units, average variable costs are Rs. 18, and average total costs are Rs. 36. The firm's profits are equal to
Atul can do a piece of work in 18 days, Aaravya is 50% more efficient than Atul. How much more time does Atul take than Aaravya to do the same piece of work?