एक वस्तु को 2,200 रुपये में बेचने पर 10% का लाभ होता है। यदि उसी वस्तु को 2,600 रुपये में बेचा जाए, तो लाभ प्रतिशत क्या होगा?

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?