An article was sold for Rs. 1,190 after allowing a discount of 15%. If a 12.5% discount is given instead, then for how much should it be sold?

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?