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females : males : total
5 : 6 : 11
35u : 42u : 77u

girls : women : females
2 : 3 : 5
14u : 21u : 35u

boys : men : males
3 : 4 : 7
18u : 24u : 42u

24u – 21u = 3u ——- 120

1u ——- 120/3 = 40
77u ——- 77 x 40 = 3080

Ans : 3080 people.

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