whatever14 whatever14
  • 14-11-2016
  • Mathematics
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When the elevator was out of service, Debi walked down 21 flights of stairs. She stopped to rest after every 3 flights. How many times did Debi stop to rest?

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aswang8573
aswang8573 aswang8573
  • 14-11-2016
She stopped to rest every 7 flights.
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Brie11
Brie11 Brie11
  • 14-11-2016
Debi stopped 7 times to rest.
Just divide 21 by 3
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