How to find the answer from a table - SSAT Middle Level: Quantitative

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Question

Below is a table that gives the population of Washington City for six census years.

Which of the following decades saw the greatest growth in the city's population?

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Answer

For each decade, take the difference of the population of the last year and that of the first year. We can omit 1990 to 2000, as the population declined over that decade.

1960-70:

1970-80:

1980-90:

2000-10:

The greatest growth occurred between 2000 and 2010.

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