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If a class of 30 students includes 9 nine-year-old boys and 9 nine-year-old girls, what is the proportion of nine-year-olds?
  • a)
    1/2
  • b)
    2/5
  • c)
    3/5
  • d)
    1/3
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
If a class of 30 students includes 9 nine-year-old boys and 9 nine-yea...
The total number of nine-year-olds is 18 (9 boys + 9 girls). The proportion of nine-year-olds in the class is calculated as 18/30, which simplifies to 3/5. This reflects the fraction of the class that falls into this age group, highlighting the concept of proportions in demographic studies.
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