Mathematics, 18.11.2020 23:00, riptaylorsreputation

It takes Mark 1 hour to get to work each day. Mark drives from home 20 minutes to the train station at a constant rate of 42 mph. He then takes the train, traveling at a constant 60 mph, the remaining distance to work. How far does Mark live from his work place? Help please lots of points offered (55)

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It takes Mark 1 hour to get to work each day. Mark drives from home 20 minutes to the train station...