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The ratio of boys to girls is 9:11. If total students are 80, number of girls is:
  1. 36
  2. 40
  3. 44
  4. 48
Explanation

Ratio boys : girls = 9 : 11
Total students = 80

Total parts = 9 + 11 = 20

Each part = 80 ÷ 20 = 4

Girls = 11 parts:

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