cadzhyan cadzhyan
  • 13-12-2020
  • Mathematics
contestada

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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tishanarang2004 tishanarang2004
  • 13-12-2020
David will have 2.57 seconds to get to mark and it’s 50 meters
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