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  • 24-08-2019
  • Mathematics
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Mr Yang’s son has a total of twenty-one $1 and $2 coins in his money box. When he counts his money, he finds that its total value is $30. How many coins of each type does he have?

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FREG0707
FREG0707 FREG0707
  • 24-08-2019
$2-9
$1-12
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