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Fourteen boys and 21 girls will be equally divided into groups. Find the greatest number of groups that can be created if no one is left out.
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Fourteen boys and 21 girls will be equally divided into groups. Find the greatest number of groups that can be created if no one is left out.

User Fred Perrin
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The greatest common denominator for 14 and 21 is 7. (14 / 7 = 2 21 / 7 = 3). So, if you had groups of 7 you would have 2 groups of boys and 3 groups of girls which gives you a total of 5 groups.
User Mintaka
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