Mathematics, 13.12.2020 08:10, scottmn

Mark and his brother David are fighting over a toy airplane while playing their yard. Mark grabs the plane and takes off running at rate of 7.5 miles per hour. One minute after Mark starts running, David starts to chase him at rate of 9mph. How long will David to reach Mark and how far will they have run?

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Mark and his brother David are fighting over a toy airplane while playing their yard. Mark grabs the...