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Boys(chess) -> 7u

Boys(drama) -> 5/7 of Boys(chess) = 5u

Girls(chess) -> 21

Girls(drama) -> 34

Total(chess) -> 7u + 21

Total(drama) -> 5u + 34

Drama club has 5 more members,

therefore 7u +21 + 5 = 5u + 34

2u = 8

1u = 4

(a) Number of members in Drama Club -> 5u + 34 = 54

 

Total(chess) -> 7u + 21 = 49

Grand Total -> 7u + 21 + 5u + 34 = 103

(b) Percentage -> (49 ÷ 103) × 100 = 47.57% ≅ 47.6% 

 

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