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City X has a population of 3 × 105 and City Y has a population of 6 × 106. Which statement correctly describes the relationship between the populations of City X and City Y?

A) The population of City Y is 2 times the population of City X.
B) The population of City Y is 20 times the population of City X.
C) The population of City X is 300,000 less than the population of City Y.
D) The population of City X is 3,000,000 less than the population of City Y.

Common Core State Standard: CCSS.Math.Content.8.EE.A.3
Grade 8 Mathematics Reference Sheet