nicholasrussell nicholasrussell

25-09-2017
Mathematics

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Sergio's internet provider charges its customers $9 per month plus 4¢ per minute of on-line usage. Sergio received a bill from the provider covering a period and was charged a total of $81.40. How many minutes did he spend on-line during that period? (Round to the nearest whole minute, if necessary.)

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eroberts1557 eroberts1557

25-09-2017

$81.40-$9.00=$72.40
$72.40/.4 (cents)= 181 minutes

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