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A type is typically makes an error on one out of every 21 documents they complete if the typist can complete 120 documents an hour how many errors does he make in three and a half hours
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A type is typically makes an error on one out of every 21 documents they complete if the typist can complete 120 documents an hour how many errors does he make in three and a half hours

User Pjehyun
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Answer: 21 document= 1 error 120 document= 1 hour in three and a half hours= 21 mistakes
User Sdikby
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