The rate of profit margin on the sale of each CD is $0.60.
It is defined as a science that studies the analysis of resources, such as natural, monetary, in order to create wealth, consumption of goods and services, to meet human needs.
In economics profit is defined as the difference between the income and the cost of a product, the calculation equation is:
Profit = Pventa - Cost
Profit = $1.50 - $0.90
Profit = $0.60
The gain in this case is over 50%, a value that is a little exaggerated by law.
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