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Sticky Note
The ratio of boys and girls in a class is 9:11. If there are 80 students in total, the number of girls is?
  1. 36
  2. 40
  3. 44
  4. 48
Explanation

Ratio of boys : girls = 9 : 11

Total parts:

Total students = 80

Girls

frac{11}{20} times 80 = 44

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The ratio of two persons' salaries is 4:5. If the first person's salary is 600, what is the second person's salary?
  1. 800
  2. 750
  3. 700
  4. None of these
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If a class has 14 boys and 18 girls, what is the ratio of girls to boys?
  1. 7 : 9
  2. 9 : 7
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  4. None of these
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  2. 15 : 32
  3. 20 : 12
  4. None of these
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Two values are in the smallest ratio 4:5 and their LCM is 180. What is the smaller value?
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  2. 36
  3. 45
  4. 54
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  2. 1000
  3. 1100
  4. 1200
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