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In a group of students, 1/5 are aged below 8 years. Of the remaining 2/5 are above 8 years. What fraction of the students are exactly 8 years of age?
  • a)
    12/25
  • b)
    2/5
  • c)
    3/5
  • d)
    4/25
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
In a group of students, 1/5 are aged below 8 years. Of the remaining 2...
Let the total number of students in the group be 1
Number of students who are below age 8 = 1 × 1/5 = 1/5
Remaining students = 1 – 1/5 = 4/5
Number of students who are above age 8 = 4/5 × 2/5 = 8/25
Number of students who are exactly 8 years old = 1 – 1/5 – 8/25 = 12/25
Short trick:
Let the total number of students be 25
Number of student who are below age 8 = 25 × 1/5 = 5
Remaining students = 25 – 5 = 20
Number of students who are above age 8 = 20 × 2/5 = 8
Number of students who are exactly age 8 = 25 – 5 – 8 = 12
Required fraction = 12/25
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In a group of students, 1/5 are aged below 8 years. Of the remaining 2/5 are above 8 years. What fraction of the students are exactly 8 years of age?a)12/25b)2/5c)3/5d)4/25Correct answer is option 'A'. Can you explain this answer? for JAMB 2025 is part of JAMB preparation. The Question and answers have been prepared according to the JAMB exam syllabus. Information about In a group of students, 1/5 are aged below 8 years. Of the remaining 2/5 are above 8 years. What fraction of the students are exactly 8 years of age?a)12/25b)2/5c)3/5d)4/25Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JAMB 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a group of students, 1/5 are aged below 8 years. Of the remaining 2/5 are above 8 years. What fraction of the students are exactly 8 years of age?a)12/25b)2/5c)3/5d)4/25Correct answer is option 'A'. Can you explain this answer?.
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