A wholesaler agrees to give a quantity of goods as a discount such that the customer receives 10% more goods for the same cash price compared to credit. What is the effective percentage of the discount given on the total goods received?

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?