A shopkeeper buys a computer table for Rs. 5,500. What should be the marked price of the computer table such that even after allowing a 10% discount, he gains Rs. 1,070?

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?