John has 2 marbles. Karen meets up with John on the way to Paul’s house. Karen has 5 marbles of her own. When they get to Paul’s house, he shows them his 9 marbles. What percentage of all of the marbles does John have? (Provide your answer to at least three digits.)
Total number of marbles = 2+5+9= 16
John's percentage= 2/16 x 100= 12.5%
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