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Ratios & Percentages

Ratios & Percentages

Example 1

In a small town in New York, the population has been slowly declining. In 1999 there were 2087 residents, and only 1560 in 2009. What is the percent decrease?

Example 2

The price of a Shmintendo game system has decreased over the years. When the Shmintendo was first introduced it was $249. A few years later, a Shmintendo sold for $199. What is the percent decrease?

Example 3

In the early 1900's the average life span for US citizen was 49 years. It is now 78.2 years. What is the percent increase?

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