By selling an article for ₹4,824, a man gains 20%. What will be his profit percentage (rounded off to the nearest integer) if he sells it for ₹6,000?

A company considers hiring an extra machine for $150 per day to produce additional units. If the additional throughput contribution generated from producing these units on the machine is $390, by how much will total profit increase?

If the cost price of an article is 85 times its selling price, what is the loss percentage?