A shopkeeper sold two articles. He sold one article at Rs. 29,337 and made a 27% profit. He sold the other article at Rs. 14,206.50 and incurred a 23% loss. What is his overall gain or loss percent (correct to the nearest integer)?

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?