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Recently in the United States, there were about 300,000,000 cell phone users. That same year, there were about 5.7*10^9 cell phone users worldwide. About how many times larger was the number of cell phone
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Recently in the United States, there were about 300,000,000 cell phone users. That same year, there were about 5.7*10^9 cell phone users worldwide. About how many times larger was the number of cell phone users worldwide than in the United States?

User Bharath Mg
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US: 3 x 10^8
5.7 x 10^9 / 3 x 10^8 = 19
User Duane Moore
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