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Answer
: 5 girls (in a class of 11)
Girls
Class
% girls
1
2
50%
2
4
50%
5
40%
3
7
$\frac37$ = 42.9%
8
$\frac38$ = 37.5%
4
9
44.4...%
5
11
45.4545%
This problem is taken from the
UKMT Mathematical Challenges
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