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21-11-2016
Mathematics

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tom has 6 quarters and 12 dimes in his pocket how many coins does he need to take out his pocket to make sure he has 4 quarters

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Greenleafable Greenleafable

23-11-2016

He would have to take out at least 16 coins.

Taking any less could result in having fewer quarters since even 15 could result in 12 dimes and 3 quarters. This way it will always be at least 4 quarters.

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