A shop keeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of cost price to the printed price of the book is
Ocean trenches are the deepest parts of the ocean. Deep ocean trenches are associated with Constantly Moving a certain type of volcanic chain called an island arc and with zones of high earthquake activity.
If a consumer's demand for a good moves in the same direction as the consumer's income, the consumer's demand for that good must be inversely related to the price of the good is called __________.