If the consumer price index (cpi) was 235 at year-end 2014 and at 230 at year-end 2012, then inflation during 2014 was a) 0 because prices were stable in 2014. b) 2.2%. c) 5%. d) 30%.

Inflation is a key concept in the study of Economic Science, because it is the way to understand the devaluation or the valuation of money. Inflation occurs when we compare price differences of the same product in two different periods, and can be calculated by price or by some index, such as the Consumer Price Index.

The calculation should be done as follows: we take a base year, in our example is the year 2012. If there was a change in the index between the other year, 2014, there was inflation.

This case can be solved with a simple rule of three:

2012 (base) => 230 = 100%

2014 => 235 = x

Answer = 2.17% which is approximately 2.2%, answer (B)

Note: If you have the prices you just need to use a formula:

[(Current price - base year price) / Current price] x 100

hypothetical example:

Base price in 2012 = $5

Current price in 2014 = $5,50

Using the formula: [(5,50 - 5)/5,5] x 100 = 9%

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.