A trader sells two microwaves at ₹54,000 per microwave. On one he gains 8% and on the other he loses 46%. Find his approximate overall loss percentage in the entire transaction.

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?