In this video the instructor shows how to compute percentage problems. Percentage was first used in ancient Rome when the emperor Augusts levied a 1/100 of a tax on goods sold. To solve percentage problems you need to know how to convert between percentages and decimals. When you have a value in decimal, to convert it into percentage, shift the point two decimals to the right. To convert from percentages to decimals, shift the decimal two places to the left. For example to convert .50 to percentage, we move the decimal to two places right giving 50%. Similarly 25% in decimal form will be .25. Now using this the instructor shows how to solve percentage problems. This video shows how to work with percentages.

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