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Problem-Solving and Data Analysis Difficulty: Hard
Year Subscriptions
sold
2012 5,600
2013 5,880

The manager of an online news service received the report above on the number of subscriptions sold by the service. The manager estimated that the percent increase from 2012 to 2013 would be double the percent increase from 2013 to 2014. How many subscriptions did the manager expect would be sold in 2014?

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Explanation

Choice B is correct. The percent increase from 2012 to 2013 was the fraction with numerator 5,880 minus 5,600, and denominator 5,600, equals 0 point 0 5, or 5%. Since the percent increase from 2012 to 2013 was estimated to be double the percent increase from 2013 to 2014, the percent increase from 2013 to 2014 was expected to be 2.5%.
Therefore, the number of subscriptions sold in 2014 is expected to be the number of subscriptions sold in 2013 multiplied by 1 plus 0 point 0 2 5, or 5,880 times 1 point 0 2 5, equals 6,027.

Choice A is incorrect and is the result of adding half of the value of the increase from 2012 to 2013 to the 2013 result. Choice C is incorrect and is the result adding twice the value of the increase from 2012 to 2013 to the 2013 result. Choice D is incorrect and is the result of interpreting the percent increase from 2013 to 2014 as double the percent increase from 2012 to 2013.