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​A recent survey determined that 5 out of 7 teens own portable music devices. In a special survey group, 1510 teens owned portable music devices. How many

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indecisionA recent survey determined that 5 out of 7 teens own portable music devices. In a special survey group, 1510 teens owned portable music devices. How many teens were in this survey group?

 
 Oct 4, 2016

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