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प्रश्न
`1/6` of the class students are above average, `1/4` are average and rest are below average. If there are 48 students in all, how many students are below average in the class?
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उत्तर
Number of above average students = `1/6` of the class students
Number of average students = `1/4` of the class students
∴ Number of below average students
= `1 - [1/6 + 1/4]` of the class students
= `1 - [(2 + 3)/12]`
= `1 - 5/12`
= `7/12` of the class students
Since, number of students in the class = 48 ...[Given]
∴ Number of below average students = `7/12 xx 48 = 28`
So, number of below average students are 28.
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