An article is sold for ₹452.20 after allowing three successive discounts of 20%, 30%, and 5%. If a single discount of 55% is given on the marked price, then its selling price (in ₹) will be:

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?