Physics, 16.03.2020 17:28 carelee67051

Suppose Joe, who can type 40 words per minute, takes 2.5 hours to type his report. To speed things up, his friend Mark offers to help him. Mark can type 20 words per minute. Working together, how long will it take Joe and Mark to type this report?

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Suppose Joe, who can type 40 words per minute, takes 2.5 hours to type his report. To speed things u...