At eugene's printing company llc there are two kinds of printing presses: model a which can print 40 books per day and model b which can print 70 books per day. the company owns 13 total printing presses and this allows them to print 820 books per day. how many of each type of press do they have?

I believe the answer is: Prices for goods and services increased, and a dollar bought less than it previously had

In the 1970s, united states was experiencing a period of economic stagnation which later known as called the great inflation of the 1970s.

During this period, the number of unemployment skyrocketed and the value of our currency fall dramatically, which caused an increase in overall products and less amount of products it can obtain with previously same amount.