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22-07-2017
Mathematics

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A computer printer can print a 640-word document in 30 seconds. At this rate, how many seconds are required to print a document that contains 855 words?

Respuesta :

22-07-2017

The unit rate is 21.3333333333333333. So, the printer can print 21.3333333 word doc in 1 sec
21.3333333333333333*855=18240
hope this helps:)

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